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3 votes
Is 4.2:1.5 proportional to 12:5

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User RHelp
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1 Answer

5 votes
No it is not, because if you cross multiply 12 and 1.5 you'll get 18. But if you cross multiply 5 by 4.2 you'll get 21. And 18 is not equal to 21.
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User BuddhistBeast
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