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Finding the Fourth Proportional to 132,195.60, 198,001.80 and 79,513.20

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Solution

The fourth proportional to 132,195.60, 198,001.80 and 79,513.20 is: 119,094.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,195.60 : 198,001.80 = 79,513.20 : x
  2. Step 2: Convert to fraction form
    132,195.60/198,001.80 = 79,513.20/x
  3. Step 3: Cross multiply
    132,195.60x = 198,001.80 × 79,513.20
  4. Step 4: Simplify right side
    132,195.60x = 15,743,756,723.76
  5. Step 5: Solve for x
    x = 15,743,756,723.76/132,195.60
  6. Step 6: Final answer
    x = 119,094.41

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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.