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Finding the Fourth Proportional to 55,140.70, 82,721.85 and 23,550.70

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Solution

The fourth proportional to 55,140.70, 82,721.85 and 23,550.70 is: 35,330.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,140.70 : 82,721.85 = 23,550.70 : x
  2. Step 2: Convert to fraction form
    55,140.70/82,721.85 = 23,550.70/x
  3. Step 3: Cross multiply
    55,140.70x = 82,721.85 × 23,550.70
  4. Step 4: Simplify right side
    55,140.70x = 1,948,157,472.80
  5. Step 5: Solve for x
    x = 1,948,157,472.80/55,140.70
  6. Step 6: Final answer
    x = 35,330.66

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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.