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Let x be the number of miles required to drive 93miles.

Write a proportion for the problem using rates.

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According to

$\"\"$ (Means-extremes Property of proportion: If $\"\"$ , then $\"\"$ ) $\"\"$

$\"\"$ (Cross products)

$\"\"$ (Divide each side by 248)

$\"\"$ (Cancel common terms)

$\"\"$ (Divide: $\"\"$ ) $\"\"$

She needs $\"\"$ hours to drive additional 93 miles.