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Finding the Fourth Proportional to 359,381.16, 539,008.52 and 131,629.73

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Solution

The fourth proportional to 359,381.16, 539,008.52 and 131,629.73 is: 197,421.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,381.16 : 539,008.52 = 131,629.73 : x
  2. Step 2: Convert to fraction form
    359,381.16/539,008.52 = 131,629.73/x
  3. Step 3: Cross multiply
    359,381.16x = 539,008.52 × 131,629.73
  4. Step 4: Simplify right side
    359,381.16x = 70,949,542,602.11
  5. Step 5: Solve for x
    x = 70,949,542,602.11/359,381.16
  6. Step 6: Final answer
    x = 197,421.43

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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.