Answer
$274,400,000=2.744\times10^8$
Work Step by Step
$274,400,000=274,400,000.\frac{100,000,000}{100,000,000}=\frac{274,400,000}{100,000,000}.100,000,000=2.744(100,000,000)$
But, $100,000,000=10^8$
$274,400,000=2.744\times10^8$
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