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Finding the Fourth Proportional to 128,834,109.30, 193,251,163.95 and 128,834,109.30

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Solution

The fourth proportional to 128,834,109.30, 193,251,163.95 and 128,834,109.30 is: 193,251,163.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,834,109.30 : 193,251,163.95 = 128,834,109.30 : x
  2. Step 2: Convert to fraction form
    128,834,109.30/193,251,163.95 = 128,834,109.30/x
  3. Step 3: Cross multiply
    128,834,109.30x = 193,251,163.95 × 128,834,109.30
  4. Step 4: Simplify right side
    128,834,109.30x = 24,897,341,578,686,516
  5. Step 5: Solve for x
    x = 24,897,341,578,686,516/128,834,109.30
  6. Step 6: Final answer
    x = 193,251,163.95

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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.