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Finding the Fourth Proportional to 120,882.63, 166,748.54 and 75,481.80

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Solution

The fourth proportional to 120,882.63, 166,748.54 and 75,481.80 is: 104,121.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,882.63 : 166,748.54 = 75,481.80 : x
  2. Step 2: Convert to fraction form
    120,882.63/166,748.54 = 75,481.80/x
  3. Step 3: Cross multiply
    120,882.63x = 166,748.54 × 75,481.80
  4. Step 4: Simplify right side
    120,882.63x = 12,586,479,569.16
  5. Step 5: Solve for x
    x = 12,586,479,569.16/120,882.63
  6. Step 6: Final answer
    x = 104,121.49

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