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Finding the Fourth Proportional to 115,192.92, 172,884.42 and 89,056.92

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Solution

The fourth proportional to 115,192.92, 172,884.42 and 89,056.92 is: 133,658.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,192.92 : 172,884.42 = 89,056.92 : x
  2. Step 2: Convert to fraction form
    115,192.92/172,884.42 = 89,056.92/x
  3. Step 3: Cross multiply
    115,192.92x = 172,884.42 × 89,056.92
  4. Step 4: Simplify right side
    115,192.92x = 15,396,553,961.19
  5. Step 5: Solve for x
    x = 15,396,553,961.19/115,192.92
  6. Step 6: Final answer
    x = 133,658.86

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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.