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Finding the Fourth Proportional to 189,286.80, 283,930.20 and 187,974.60

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Solution

The fourth proportional to 189,286.80, 283,930.20 and 187,974.60 is: 281,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,286.80 : 283,930.20 = 187,974.60 : x
  2. Step 2: Convert to fraction form
    189,286.80/283,930.20 = 187,974.60/x
  3. Step 3: Cross multiply
    189,286.80x = 283,930.20 × 187,974.60
  4. Step 4: Simplify right side
    189,286.80x = 53,371,665,772.92
  5. Step 5: Solve for x
    x = 53,371,665,772.92/189,286.80
  6. Step 6: Final answer
    x = 281,961.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.