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Finding the Fourth Proportional to 188,711.20, 260,517.89 and 145,593.89

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Solution

The fourth proportional to 188,711.20, 260,517.89 and 145,593.89 is: 200,993.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,711.20 : 260,517.89 = 145,593.89 : x
  2. Step 2: Convert to fraction form
    188,711.20/260,517.89 = 145,593.89/x
  3. Step 3: Cross multiply
    188,711.20x = 260,517.89 × 145,593.89
  4. Step 4: Simplify right side
    188,711.20x = 37,929,812,081.09
  5. Step 5: Solve for x
    x = 37,929,812,081.09/188,711.20
  6. Step 6: Final answer
    x = 200,993.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.