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Finding the Fourth Proportional to 7,168.74, 10,748.90 and 2,169.61

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Solution

The fourth proportional to 7,168.74, 10,748.90 and 2,169.61 is: 3,253.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168.74 : 10,748.90 = 2,169.61 : x
  2. Step 2: Convert to fraction form
    7,168.74/10,748.90 = 2,169.61/x
  3. Step 3: Cross multiply
    7,168.74x = 10,748.90 × 2,169.61
  4. Step 4: Simplify right side
    7,168.74x = 23,320,920.93
  5. Step 5: Solve for x
    x = 23,320,920.93/7,168.74
  6. Step 6: Final answer
    x = 3,253.14

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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.