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Finding the Fourth Proportional to 431,530.88, 647,192.38 and 132,014.06

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Solution

The fourth proportional to 431,530.88, 647,192.38 and 132,014.06 is: 197,989.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,530.88 : 647,192.38 = 132,014.06 : x
  2. Step 2: Convert to fraction form
    431,530.88/647,192.38 = 132,014.06/x
  3. Step 3: Cross multiply
    431,530.88x = 647,192.38 × 132,014.06
  4. Step 4: Simplify right side
    431,530.88x = 85,438,493,684.86
  5. Step 5: Solve for x
    x = 85,438,493,684.86/431,530.88
  6. Step 6: Final answer
    x = 197,989.29

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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.