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Finding the Fourth Proportional to 403,432.80, 605,149.20 and 166,696.80

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Solution

The fourth proportional to 403,432.80, 605,149.20 and 166,696.80 is: 250,045.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,432.80 : 605,149.20 = 166,696.80 : x
  2. Step 2: Convert to fraction form
    403,432.80/605,149.20 = 166,696.80/x
  3. Step 3: Cross multiply
    403,432.80x = 605,149.20 × 166,696.80
  4. Step 4: Simplify right side
    403,432.80x = 100,876,435,162.56
  5. Step 5: Solve for x
    x = 100,876,435,162.56/403,432.80
  6. Step 6: Final answer
    x = 250,045.20

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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.