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Finding the Third Proportional to 391,892.25 and 605,677.13

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Solution

The third proportional to 391,892.25 and 605,677.13 is: 936,085.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,892.25 : 605,677.13 = 605,677.13 : x
  2. Step 2: Convert to fraction form
    391,892.25/605,677.13 = 605,677.13/x
  3. Step 3: Cross multiply
    391,892.25x = 605,677.13 × 605,677.13
  4. Step 4: Simplify right side
    391,892.25x = 366,844,779,748.27
  5. Step 5: Solve for x
    x = 366,844,779,748.27/391,892.25
  6. Step 6: Final answer
    x = 936,085.82

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.