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Finding the Fourth Proportional to 168,631, 252,872.40 and 89,726.48

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Solution

The fourth proportional to 168,631, 252,872.40 and 89,726.48 is: 134,550.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,631 : 252,872.40 = 89,726.48 : x
  2. Step 2: Convert to fraction form
    168,631/252,872.40 = 89,726.48/x
  3. Step 3: Cross multiply
    168,631x = 252,872.40 × 89,726.48
  4. Step 4: Simplify right side
    168,631x = 22,689,350,341.15
  5. Step 5: Solve for x
    x = 22,689,350,341.15/168,631
  6. Step 6: Final answer
    x = 134,550.29

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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.