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Finding the Fourth Proportional to 8,720.43, 13,063.11 and 4,033.86

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Solution

The fourth proportional to 8,720.43, 13,063.11 and 4,033.86 is: 6,042.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.43 : 13,063.11 = 4,033.86 : x
  2. Step 2: Convert to fraction form
    8,720.43/13,063.11 = 4,033.86/x
  3. Step 3: Cross multiply
    8,720.43x = 13,063.11 × 4,033.86
  4. Step 4: Simplify right side
    8,720.43x = 52,694,756.90
  5. Step 5: Solve for x
    x = 52,694,756.90/8,720.43
  6. Step 6: Final answer
    x = 6,042.68

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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.