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Finding the Fourth Proportional to 83,187,125.20, 124,780,687.80 and 83,187,125.20

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Solution

The fourth proportional to 83,187,125.20, 124,780,687.80 and 83,187,125.20 is: 124,780,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,187,125.20 : 124,780,687.80 = 83,187,125.20 : x
  2. Step 2: Convert to fraction form
    83,187,125.20/124,780,687.80 = 83,187,125.20/x
  3. Step 3: Cross multiply
    83,187,125.20x = 124,780,687.80 × 83,187,125.20
  4. Step 4: Simplify right side
    83,187,125.20x = 10,380,146,698,560,712
  5. Step 5: Solve for x
    x = 10,380,146,698,560,712/83,187,125.20
  6. Step 6: Final answer
    x = 124,780,687.80

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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.