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Finding the Fourth Proportional to 1,951.44, 2,692.92 and 1,067.28

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Solution

The fourth proportional to 1,951.44, 2,692.92 and 1,067.28 is: 1,472.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.44 : 2,692.92 = 1,067.28 : x
  2. Step 2: Convert to fraction form
    1,951.44/2,692.92 = 1,067.28/x
  3. Step 3: Cross multiply
    1,951.44x = 2,692.92 × 1,067.28
  4. Step 4: Simplify right side
    1,951.44x = 2,874,099.66
  5. Step 5: Solve for x
    x = 2,874,099.66/1,951.44
  6. Step 6: Final answer
    x = 1,472.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.