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Finding the Fourth Proportional to 123,057.20, 184,585.80 and 39,951.20

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Solution

The fourth proportional to 123,057.20, 184,585.80 and 39,951.20 is: 59,926.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,057.20 : 184,585.80 = 39,951.20 : x
  2. Step 2: Convert to fraction form
    123,057.20/184,585.80 = 39,951.20/x
  3. Step 3: Cross multiply
    123,057.20x = 184,585.80 × 39,951.20
  4. Step 4: Simplify right side
    123,057.20x = 7,374,424,212.96
  5. Step 5: Solve for x
    x = 7,374,424,212.96/123,057.20
  6. Step 6: Final answer
    x = 59,926.80

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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.