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Finding the Third Proportional to 391,353 and 605,517.75

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Solution

The third proportional to 391,353 and 605,517.75 is: 936,882.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,353 : 605,517.75 = 605,517.75 : x
  2. Step 2: Convert to fraction form
    391,353/605,517.75 = 605,517.75/x
  3. Step 3: Cross multiply
    391,353x = 605,517.75 × 605,517.75
  4. Step 4: Simplify right side
    391,353x = 366,651,745,565.06
  5. Step 5: Solve for x
    x = 366,651,745,565.06/391,353
  6. Step 6: Final answer
    x = 936,882.42

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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.