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Finding the Fourth Proportional to 123,716.80, 185,575.20 and 40,610.80

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Solution

The fourth proportional to 123,716.80, 185,575.20 and 40,610.80 is: 60,916.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,716.80 : 185,575.20 = 40,610.80 : x
  2. Step 2: Convert to fraction form
    123,716.80/185,575.20 = 40,610.80/x
  3. Step 3: Cross multiply
    123,716.80x = 185,575.20 × 40,610.80
  4. Step 4: Simplify right side
    123,716.80x = 7,536,357,332.16
  5. Step 5: Solve for x
    x = 7,536,357,332.16/123,716.80
  6. Step 6: Final answer
    x = 60,916.20

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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.