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Finding the Fourth Proportional to 126,128,601.30, 189,192,901.95 and 126,128,601.30

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Solution

The fourth proportional to 126,128,601.30, 189,192,901.95 and 126,128,601.30 is: 189,192,901.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,128,601.30 : 189,192,901.95 = 126,128,601.30 : x
  2. Step 2: Convert to fraction form
    126,128,601.30/189,192,901.95 = 126,128,601.30/x
  3. Step 3: Cross multiply
    126,128,601.30x = 189,192,901.95 × 126,128,601.30
  4. Step 4: Simplify right side
    126,128,601.30x = 23,862,636,098,841,540
  5. Step 5: Solve for x
    x = 23,862,636,098,841,540/126,128,601.30
  6. Step 6: Final answer
    x = 189,192,901.95

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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.