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Finding the Fourth Proportional to 116,251.92, 160,432.92 and 68,507.28

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Solution

The fourth proportional to 116,251.92, 160,432.92 and 68,507.28 is: 94,543.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,251.92 : 160,432.92 = 68,507.28 : x
  2. Step 2: Convert to fraction form
    116,251.92/160,432.92 = 68,507.28/x
  3. Step 3: Cross multiply
    116,251.92x = 160,432.92 × 68,507.28
  4. Step 4: Simplify right side
    116,251.92x = 10,990,822,971.66
  5. Step 5: Solve for x
    x = 10,990,822,971.66/116,251.92
  6. Step 6: Final answer
    x = 94,543.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.