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Finding the Fourth Proportional to 192,730.68, 288,972.72 and 92,691.64

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Solution

The fourth proportional to 192,730.68, 288,972.72 and 92,691.64 is: 138,978.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,730.68 : 288,972.72 = 92,691.64 : x
  2. Step 2: Convert to fraction form
    192,730.68/288,972.72 = 92,691.64/x
  3. Step 3: Cross multiply
    192,730.68x = 288,972.72 × 92,691.64
  4. Step 4: Simplify right side
    192,730.68x = 26,785,355,332.06
  5. Step 5: Solve for x
    x = 26,785,355,332.06/192,730.68
  6. Step 6: Final answer
    x = 138,978.16

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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.