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You’re bang on with your multiplicative comparisons!
When it is an easier ratio, like 6 and 12, you can quickly / more intuitively see the double and half relationship… but 5 and 7 is trickier because now you are multiplying by 7 and dividing by 5 or “seven-fifthing” and the inverse which is just hard on the brain (but so important to become flexible with!).