Question

Find the missing number in the box:

Medium

Solution

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Ratios that are equal are called equivalent ratios and are said to be in proportion.
Let the missing number be x

By cross multiplying, we get





Consider second and third ratios
Let the missing number be

By cross multiplying, we get



From the last step,

Consider last two ratios.
Let the missing number be z

By cross multiplying, we get


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