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Finding the Fourth Proportional to 5,161.80, 7,743.42 and 1,874.52

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Solution

The fourth proportional to 5,161.80, 7,743.42 and 1,874.52 is: 2,812.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.80 : 7,743.42 = 1,874.52 : x
  2. Step 2: Convert to fraction form
    5,161.80/7,743.42 = 1,874.52/x
  3. Step 3: Cross multiply
    5,161.80x = 7,743.42 × 1,874.52
  4. Step 4: Simplify right side
    5,161.80x = 14,515,195.66
  5. Step 5: Solve for x
    x = 14,515,195.66/5,161.80
  6. Step 6: Final answer
    x = 2,812.04

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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.