Whereby x Which - Qual a diferença?

Hello english Experts, how's it going? Today I brought formal conjunctions to the topic and an interesting question in my point of view It's getting me into trouble, take a look in the sentences bellow

"It's put me in a position whereby I can't afford to take a job."
"It's put me in a position in which I can't afford to take a job."

"We need to devise some sort of system whereby people can contact each other."
"We need to devise some sort of system through which people can liaise with each other."

Can they be used as a synonyms, what do you think??

I appreciate your answers, thank you all! :D

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The are commonly used as synonyms, but according to Cambridge, the use of "whereby" to mean "in which" is non-standard.

http://dictionary.cambridge.org/diction ... sh/whereby

The original meaning of "whereby" is closer to "by which" and "through which".

For example:
"The means whereby we achieve our goals are unrestricted by the employer."
"The means by which we achieve our goals are unrestricted by the employer."
"The means through which we achieve our goals are unrestricted by the employer."

Actually, "in which" can often be used as a synonym of "where" (and not "whereby"). So "It puts me in a position where I can't afford to take a job" is quite correct.