Whats a proportional relationship?

In my opinion, a proportional relationship is like a buddy system: for every step you take, your buddy takes one too. It's this simple, no-fuss rule – if you grab two cookies, your buddy grabs two as well. It's just things moving together in harmony, like shadowing your friend in a walk. Alright tell me what is a proportional relationship?

Whats a proportional relationship?
Whats a proportional relationship?
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