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Finding the Fourth Proportional to 169,876.70, 254,815.05 and 161,711.90

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Solution

The fourth proportional to 169,876.70, 254,815.05 and 161,711.90 is: 242,567.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,876.70 : 254,815.05 = 161,711.90 : x
  2. Step 2: Convert to fraction form
    169,876.70/254,815.05 = 161,711.90/x
  3. Step 3: Cross multiply
    169,876.70x = 254,815.05 × 161,711.90
  4. Step 4: Simplify right side
    169,876.70x = 41,206,625,884.10
  5. Step 5: Solve for x
    x = 41,206,625,884.10/169,876.70
  6. Step 6: Final answer
    x = 242,567.85

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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.