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Finding the Fourth Proportional to 47,409.20, 71,113.80 and 24,081.20

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Solution

The fourth proportional to 47,409.20, 71,113.80 and 24,081.20 is: 36,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,409.20 : 71,113.80 = 24,081.20 : x
  2. Step 2: Convert to fraction form
    47,409.20/71,113.80 = 24,081.20/x
  3. Step 3: Cross multiply
    47,409.20x = 71,113.80 × 24,081.20
  4. Step 4: Simplify right side
    47,409.20x = 1,712,505,640.56
  5. Step 5: Solve for x
    x = 1,712,505,640.56/47,409.20
  6. Step 6: Final answer
    x = 36,121.80

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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.