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Finding the Fourth Proportional to 206,593.20, 309,889.80 and 173,132.10

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Solution

The fourth proportional to 206,593.20, 309,889.80 and 173,132.10 is: 259,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,593.20 : 309,889.80 = 173,132.10 : x
  2. Step 2: Convert to fraction form
    206,593.20/309,889.80 = 173,132.10/x
  3. Step 3: Cross multiply
    206,593.20x = 309,889.80 × 173,132.10
  4. Step 4: Simplify right side
    206,593.20x = 53,651,871,842.58
  5. Step 5: Solve for x
    x = 53,651,871,842.58/206,593.20
  6. Step 6: Final answer
    x = 259,698.15

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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.