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Finding the Fourth Proportional to 16.44, 22.64 and 11.24

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Solution

The fourth proportional to 16.44, 22.64 and 11.24 is: 15.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.44 : 22.64 = 11.24 : x
  2. Step 2: Convert to fraction form
    16.44/22.64 = 11.24/x
  3. Step 3: Cross multiply
    16.44x = 22.64 × 11.24
  4. Step 4: Simplify right side
    16.44x = 254.47
  5. Step 5: Solve for x
    x = 254.47/16.44
  6. Step 6: Final answer
    x = 15.48

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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.