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Finding the Fourth Proportional to 80,474.84, 111,043.92 and 48,201.90

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Solution

The fourth proportional to 80,474.84, 111,043.92 and 48,201.90 is: 66,511.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,474.84 : 111,043.92 = 48,201.90 : x
  2. Step 2: Convert to fraction form
    80,474.84/111,043.92 = 48,201.90/x
  3. Step 3: Cross multiply
    80,474.84x = 111,043.92 × 48,201.90
  4. Step 4: Simplify right side
    80,474.84x = 5,352,527,927.45
  5. Step 5: Solve for x
    x = 5,352,527,927.45/80,474.84
  6. Step 6: Final answer
    x = 66,511.82

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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.