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Finding the Fourth Proportional to 3,791.62, 5,687.43 and 1,481.50

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Solution

The fourth proportional to 3,791.62, 5,687.43 and 1,481.50 is: 2,222.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.62 : 5,687.43 = 1,481.50 : x
  2. Step 2: Convert to fraction form
    3,791.62/5,687.43 = 1,481.50/x
  3. Step 3: Cross multiply
    3,791.62x = 5,687.43 × 1,481.50
  4. Step 4: Simplify right side
    3,791.62x = 8,425,927.55
  5. Step 5: Solve for x
    x = 8,425,927.55/3,791.62
  6. Step 6: Final answer
    x = 2,222.25

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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.