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Finding the Fourth Proportional to 83,108.70, 124,626.60 and 33,172.20

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Solution

The fourth proportional to 83,108.70, 124,626.60 and 33,172.20 is: 49,743.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,108.70 : 124,626.60 = 33,172.20 : x
  2. Step 2: Convert to fraction form
    83,108.70/124,626.60 = 33,172.20/x
  3. Step 3: Cross multiply
    83,108.70x = 124,626.60 × 33,172.20
  4. Step 4: Simplify right side
    83,108.70x = 4,134,138,500.52
  5. Step 5: Solve for x
    x = 4,134,138,500.52/83,108.70
  6. Step 6: Final answer
    x = 49,743.75

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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.