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Question
Determine if the following numbers are in proportion:
7, 42, 13, 78
Sum
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Solution
7, 42, 13, 78
`7/42=(7 ÷ 7)/(42 ÷ 7)=1/6 ;13/78=(13 ÷ 13)/(78 ÷ 13)=1/6`
Hence, 7:42::13:78 are in proportion.
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