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Finding the Fourth Proportional to 111,871.59, 154,380.78 and 60,882.54

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Solution

The fourth proportional to 111,871.59, 154,380.78 and 60,882.54 is: 84,016.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,871.59 : 154,380.78 = 60,882.54 : x
  2. Step 2: Convert to fraction form
    111,871.59/154,380.78 = 60,882.54/x
  3. Step 3: Cross multiply
    111,871.59x = 154,380.78 × 60,882.54
  4. Step 4: Simplify right side
    111,871.59x = 9,399,094,013.58
  5. Step 5: Solve for x
    x = 9,399,094,013.58/111,871.59
  6. Step 6: Final answer
    x = 84,016.81

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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.