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Finding the Fourth Proportional to 16.15, 24.18 and 11.63

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Solution

The fourth proportional to 16.15, 24.18 and 11.63 is: 17.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.15 : 24.18 = 11.63 : x
  2. Step 2: Convert to fraction form
    16.15/24.18 = 11.63/x
  3. Step 3: Cross multiply
    16.15x = 24.18 × 11.63
  4. Step 4: Simplify right side
    16.15x = 281.09
  5. Step 5: Solve for x
    x = 281.09/16.15
  6. Step 6: Final answer
    x = 17.41

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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.