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Finding the Fourth Proportional to 172,366.28, 258,791.61 and 88,186.83

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Solution

The fourth proportional to 172,366.28, 258,791.61 and 88,186.83 is: 132,404.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,366.28 : 258,791.61 = 88,186.83 : x
  2. Step 2: Convert to fraction form
    172,366.28/258,791.61 = 88,186.83/x
  3. Step 3: Cross multiply
    172,366.28x = 258,791.61 × 88,186.83
  4. Step 4: Simplify right side
    172,366.28x = 22,822,010,580.68
  5. Step 5: Solve for x
    x = 22,822,010,580.68/172,366.28
  6. Step 6: Final answer
    x = 132,404.15

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1.5x scale

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.