Finding the Third Proportional to 391,128.75 and 812,235.09
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Solution
The third proportional to 391,128.75 and 812,235.09 is: 1,686,722.97
Step by Step Solution
- Step 1: Write the proportion equation
391,128.75 : 812,235.09 = 812,235.09 : x - Step 2: Convert to fraction form
391,128.75/812,235.09 = 812,235.09/x - Step 3: Cross multiply
391,128.75x = 812,235.09 × 812,235.09 - Step 4: Simplify right side
391,128.75x = 659,725,847,519.07 - Step 5: Solve for x
x = 659,725,847,519.07/391,128.75 - Step 6: Final answer
x = 1,686,722.97
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These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.