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Finding the Fourth Proportional to 132,003.80, 198,005.70 and 43,260.20

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Solution

The fourth proportional to 132,003.80, 198,005.70 and 43,260.20 is: 64,890.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,003.80 : 198,005.70 = 43,260.20 : x
  2. Step 2: Convert to fraction form
    132,003.80/198,005.70 = 43,260.20/x
  3. Step 3: Cross multiply
    132,003.80x = 198,005.70 × 43,260.20
  4. Step 4: Simplify right side
    132,003.80x = 8,565,766,183.14
  5. Step 5: Solve for x
    x = 8,565,766,183.14/132,003.80
  6. Step 6: Final answer
    x = 64,890.30

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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.