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Finding the Fourth Proportional to 83,187,125.70, 124,780,688.55 and 83,187,125.70

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Solution

The fourth proportional to 83,187,125.70, 124,780,688.55 and 83,187,125.70 is: 124,780,688.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,187,125.70 : 124,780,688.55 = 83,187,125.70 : x
  2. Step 2: Convert to fraction form
    83,187,125.70/124,780,688.55 = 83,187,125.70/x
  3. Step 3: Cross multiply
    83,187,125.70x = 124,780,688.55 × 83,187,125.70
  4. Step 4: Simplify right side
    83,187,125.70x = 10,380,146,823,341,400
  5. Step 5: Solve for x
    x = 10,380,146,823,341,400/83,187,125.70
  6. Step 6: Final answer
    x = 124,780,688.55

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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.