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Finding the Fourth Proportional to 132,633.60, 198,496.80 and 80,080.80

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Solution

The fourth proportional to 132,633.60, 198,496.80 and 80,080.80 is: 119,847.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,633.60 : 198,496.80 = 80,080.80 : x
  2. Step 2: Convert to fraction form
    132,633.60/198,496.80 = 80,080.80/x
  3. Step 3: Cross multiply
    132,633.60x = 198,496.80 × 80,080.80
  4. Step 4: Simplify right side
    132,633.60x = 15,895,782,541.44
  5. Step 5: Solve for x
    x = 15,895,782,541.44/132,633.60
  6. Step 6: Final answer
    x = 119,847.33

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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.