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Finding the Fourth Proportional to 132,191.80, 197,882.70 and 72,845.80

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Solution

The fourth proportional to 132,191.80, 197,882.70 and 72,845.80 is: 109,045.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,191.80 : 197,882.70 = 72,845.80 : x
  2. Step 2: Convert to fraction form
    132,191.80/197,882.70 = 72,845.80/x
  3. Step 3: Cross multiply
    132,191.80x = 197,882.70 × 72,845.80
  4. Step 4: Simplify right side
    132,191.80x = 14,414,923,587.66
  5. Step 5: Solve for x
    x = 14,414,923,587.66/132,191.80
  6. Step 6: Final answer
    x = 109,045.52

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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.