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Finding the Fourth Proportional to 1,067.88, 1,472.67 and 1,025.76

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Solution

The fourth proportional to 1,067.88, 1,472.67 and 1,025.76 is: 1,414.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.88 : 1,472.67 = 1,025.76 : x
  2. Step 2: Convert to fraction form
    1,067.88/1,472.67 = 1,025.76/x
  3. Step 3: Cross multiply
    1,067.88x = 1,472.67 × 1,025.76
  4. Step 4: Simplify right side
    1,067.88x = 1,510,605.98
  5. Step 5: Solve for x
    x = 1,510,605.98/1,067.88
  6. Step 6: Final answer
    x = 1,414.58

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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.