Are 7,42,13,78 in proporation
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Answer:
Yes
Step-by-step explanation:
7 : 42 : : 13 : 78
7 and 78 are extreme terms
42 and 13 are middle terms
product of extreme terms = product of middle terms
7 x 78 = 42 x 13
546 = 546
Hence, they are in proportional
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