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Finding the Fourth Proportional to 147,472.28, 220,131.80 and 126,546.80

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Solution

The fourth proportional to 147,472.28, 220,131.80 and 126,546.80 is: 188,896.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,472.28 : 220,131.80 = 126,546.80 : x
  2. Step 2: Convert to fraction form
    147,472.28/220,131.80 = 126,546.80/x
  3. Step 3: Cross multiply
    147,472.28x = 220,131.80 × 126,546.80
  4. Step 4: Simplify right side
    147,472.28x = 27,856,974,868.24
  5. Step 5: Solve for x
    x = 27,856,974,868.24/147,472.28
  6. Step 6: Final answer
    x = 188,896.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.