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Finding the Fourth Proportional to 84,700,694.20, 126,811,892.85 and 84,700,694.20

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Solution

The fourth proportional to 84,700,694.20, 126,811,892.85 and 84,700,694.20 is: 126,811,892.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,700,694.20 : 126,811,892.85 = 84,700,694.20 : x
  2. Step 2: Convert to fraction form
    84,700,694.20/126,811,892.85 = 84,700,694.20/x
  3. Step 3: Cross multiply
    84,700,694.20x = 126,811,892.85 × 84,700,694.20
  4. Step 4: Simplify right side
    84,700,694.20x = 10,741,055,357,211,016
  5. Step 5: Solve for x
    x = 10,741,055,357,211,016/84,700,694.20
  6. Step 6: Final answer
    x = 126,811,892.85

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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.