If x is to y as 4 is to 5, then what is y: x?

" y : x : : 5 : 4 " .

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The answer is: " 5 : 4 " ; or, write as: " ."

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Explanation:

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Given:

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x : y : : 4:5 ;

What is: " y: x " ?

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Given: " x : y " ; " y : x " is the "inversion" of: " x : y " ;

If " x : y = 4 : 5 " ; then: x = 4 ; and y = 5 .

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→ y : x : : 5 : 4 ;

The answer is: " 5 : 4 " ; or, write as: " ."

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d≈7.07in

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