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Finding the Fourth Proportional to 17.88, 24.67 and 11.42

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Solution

The fourth proportional to 17.88, 24.67 and 11.42 is: 15.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.88 : 24.67 = 11.42 : x
  2. Step 2: Convert to fraction form
    17.88/24.67 = 11.42/x
  3. Step 3: Cross multiply
    17.88x = 24.67 × 11.42
  4. Step 4: Simplify right side
    17.88x = 281.73
  5. Step 5: Solve for x
    x = 281.73/17.88
  6. Step 6: Final answer
    x = 15.76

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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.