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Finding the Fourth Proportional to 132,949.92, 183,471.46 and 72,521.88

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Solution

The fourth proportional to 132,949.92, 183,471.46 and 72,521.88 is: 100,080.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,949.92 : 183,471.46 = 72,521.88 : x
  2. Step 2: Convert to fraction form
    132,949.92/183,471.46 = 72,521.88/x
  3. Step 3: Cross multiply
    132,949.92x = 183,471.46 × 72,521.88
  4. Step 4: Simplify right side
    132,949.92x = 13,305,695,205.54
  5. Step 5: Solve for x
    x = 13,305,695,205.54/132,949.92
  6. Step 6: Final answer
    x = 100,080.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.