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Finding the Fourth Proportional to 3,947.52, 5,922.20 and 1,174.14

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Solution

The fourth proportional to 3,947.52, 5,922.20 and 1,174.14 is: 1,761.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.52 : 5,922.20 = 1,174.14 : x
  2. Step 2: Convert to fraction form
    3,947.52/5,922.20 = 1,174.14/x
  3. Step 3: Cross multiply
    3,947.52x = 5,922.20 × 1,174.14
  4. Step 4: Simplify right side
    3,947.52x = 6,953,491.91
  5. Step 5: Solve for x
    x = 6,953,491.91/3,947.52
  6. Step 6: Final answer
    x = 1,761.48

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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.