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Finding the Third Proportional to 393,649 and 590,371.13

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Solution

The third proportional to 393,649 and 590,371.13 is: 885,403.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,649 : 590,371.13 = 590,371.13 : x
  2. Step 2: Convert to fraction form
    393,649/590,371.13 = 590,371.13/x
  3. Step 3: Cross multiply
    393,649x = 590,371.13 × 590,371.13
  4. Step 4: Simplify right side
    393,649x = 348,538,065,233.77
  5. Step 5: Solve for x
    x = 348,538,065,233.77/393,649
  6. Step 6: Final answer
    x = 885,403.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.