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Finding the Fourth Proportional to 17.50, 24.12 and 11.66

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Solution

The fourth proportional to 17.50, 24.12 and 11.66 is: 16.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.50 : 24.12 = 11.66 : x
  2. Step 2: Convert to fraction form
    17.50/24.12 = 11.66/x
  3. Step 3: Cross multiply
    17.50x = 24.12 × 11.66
  4. Step 4: Simplify right side
    17.50x = 281.24
  5. Step 5: Solve for x
    x = 281.24/17.50
  6. Step 6: Final answer
    x = 16.07

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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.