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Finding the Fourth Proportional to 169,646.40, 253,951.20 and 132,321.60

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Solution

The fourth proportional to 169,646.40, 253,951.20 and 132,321.60 is: 198,078.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,646.40 : 253,951.20 = 132,321.60 : x
  2. Step 2: Convert to fraction form
    169,646.40/253,951.20 = 132,321.60/x
  3. Step 3: Cross multiply
    169,646.40x = 253,951.20 × 132,321.60
  4. Step 4: Simplify right side
    169,646.40x = 33,603,229,105.92
  5. Step 5: Solve for x
    x = 33,603,229,105.92/169,646.40
  6. Step 6: Final answer
    x = 198,078.06

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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.