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Finding the Fourth Proportional to 129,115,429.30, 193,673,143.95 and 129,115,429.30

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Solution

The fourth proportional to 129,115,429.30, 193,673,143.95 and 129,115,429.30 is: 193,673,143.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,115,429.30 : 193,673,143.95 = 129,115,429.30 : x
  2. Step 2: Convert to fraction form
    129,115,429.30/193,673,143.95 = 129,115,429.30/x
  3. Step 3: Cross multiply
    129,115,429.30x = 193,673,143.95 × 129,115,429.30
  4. Step 4: Simplify right side
    129,115,429.30x = 25,006,191,124,984,944
  5. Step 5: Solve for x
    x = 25,006,191,124,984,944/129,115,429.30
  6. Step 6: Final answer
    x = 193,673,143.95

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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.