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Finding the Fourth Proportional to 132,419.25, 198,627.87 and 43,679.88

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Solution

The fourth proportional to 132,419.25, 198,627.87 and 43,679.88 is: 65,519.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,419.25 : 198,627.87 = 43,679.88 : x
  2. Step 2: Convert to fraction form
    132,419.25/198,627.87 = 43,679.88/x
  3. Step 3: Cross multiply
    132,419.25x = 198,627.87 × 43,679.88
  4. Step 4: Simplify right side
    132,419.25x = 8,676,041,526.26
  5. Step 5: Solve for x
    x = 8,676,041,526.26/132,419.25
  6. Step 6: Final answer
    x = 65,519.49

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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.