To convert inches to miles, you will need to know both the number of inches in a foot and the number of feet in a mile. Here are the necessary conversions:
1 foot = 12 inches 1 mile = 5280 feet
To convert from inches directly to miles, you can use these conversion factors.
First, convert inches to feet using the conversion factor \( \frac{1 \text{ foot}}{12 \text{ inches}} \), which you have already shown.
Next, you need to convert feet to miles. The conversion factor for this step is \( \frac{1 \text{ mile}}{5280 \text{ feet}} \).
Putting it all together, the full conversion from inches to miles is:
\[ \frac{253,440 \text{ inches}}{1} \times \frac{1 \text{ foot}}{12 \text{ inches}} \times \frac{1 \text{ mile}}{5280 \text{ feet}} \]
Therefore, the conversion factor needed to convert inches to miles after you’ve already converted inches to feet is:
\[ \frac{1 \text{ mile}}{5280 \text{ feet}} \]
So the final answer is:
The conversion factor needed is 1 mile over 5280 feet.
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