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Finding the Fourth Proportional to 173,909.80, 260,951.10 and 68,732.20

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Solution

The fourth proportional to 173,909.80, 260,951.10 and 68,732.20 is: 103,132.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,909.80 : 260,951.10 = 68,732.20 : x
  2. Step 2: Convert to fraction form
    173,909.80/260,951.10 = 68,732.20/x
  3. Step 3: Cross multiply
    173,909.80x = 260,951.10 × 68,732.20
  4. Step 4: Simplify right side
    173,909.80x = 17,935,743,195.42
  5. Step 5: Solve for x
    x = 17,935,743,195.42/173,909.80
  6. Step 6: Final answer
    x = 103,132.45

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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.