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Finding the Fourth Proportional to 123,043.20, 184,651.20 and 52,972.80

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Solution

The fourth proportional to 123,043.20, 184,651.20 and 52,972.80 is: 79,496.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,043.20 : 184,651.20 = 52,972.80 : x
  2. Step 2: Convert to fraction form
    123,043.20/184,651.20 = 52,972.80/x
  3. Step 3: Cross multiply
    123,043.20x = 184,651.20 × 52,972.80
  4. Step 4: Simplify right side
    123,043.20x = 9,781,491,087.36
  5. Step 5: Solve for x
    x = 9,781,491,087.36/123,043.20
  6. Step 6: Final answer
    x = 79,496.40

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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.