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Finding the Fourth Proportional to 123,633.60, 185,439.60 and 40,527.60

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Solution

The fourth proportional to 123,633.60, 185,439.60 and 40,527.60 is: 60,787.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,633.60 : 185,439.60 = 40,527.60 : x
  2. Step 2: Convert to fraction form
    123,633.60/185,439.60 = 40,527.60/x
  3. Step 3: Cross multiply
    123,633.60x = 185,439.60 × 40,527.60
  4. Step 4: Simplify right side
    123,633.60x = 7,515,421,932.96
  5. Step 5: Solve for x
    x = 7,515,421,932.96/123,633.60
  6. Step 6: Final answer
    x = 60,787.86

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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.