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Finding the Third Proportional to 391,612,453 and 587,418,749

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Solution

The third proportional to 391,612,453 and 587,418,749 is: 881,128,227.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,612,453 : 587,418,749 = 587,418,749 : x
  2. Step 2: Convert to fraction form
    391,612,453/587,418,749 = 587,418,749/x
  3. Step 3: Cross multiply
    391,612,453x = 587,418,749 × 587,418,749
  4. Step 4: Simplify right side
    391,612,453x = 345,060,786,676,724,992
  5. Step 5: Solve for x
    x = 345,060,786,676,724,992/391,612,453
  6. Step 6: Final answer
    x = 881,128,227.75

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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.