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Finding the Fourth Proportional to 173,151.20, 259,726.80 and 137,721.80

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Solution

The fourth proportional to 173,151.20, 259,726.80 and 137,721.80 is: 206,582.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,151.20 : 259,726.80 = 137,721.80 : x
  2. Step 2: Convert to fraction form
    173,151.20/259,726.80 = 137,721.80/x
  3. Step 3: Cross multiply
    173,151.20x = 259,726.80 × 137,721.80
  4. Step 4: Simplify right side
    173,151.20x = 35,770,042,404.24
  5. Step 5: Solve for x
    x = 35,770,042,404.24/173,151.20
  6. Step 6: Final answer
    x = 206,582.70

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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.