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Finding the Fourth Proportional to 123,661.20, 185,497.20 and 40,555.20

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Solution

The fourth proportional to 123,661.20, 185,497.20 and 40,555.20 is: 60,834.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,661.20 : 185,497.20 = 40,555.20 : x
  2. Step 2: Convert to fraction form
    123,661.20/185,497.20 = 40,555.20/x
  3. Step 3: Cross multiply
    123,661.20x = 185,497.20 × 40,555.20
  4. Step 4: Simplify right side
    123,661.20x = 7,522,876,045.44
  5. Step 5: Solve for x
    x = 7,522,876,045.44/123,661.20
  6. Step 6: Final answer
    x = 60,834.57

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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.