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Finding the Fourth Proportional to 16.44, 22.68 and 9.96

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Solution

The fourth proportional to 16.44, 22.68 and 9.96 is: 13.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.44 : 22.68 = 9.96 : x
  2. Step 2: Convert to fraction form
    16.44/22.68 = 9.96/x
  3. Step 3: Cross multiply
    16.44x = 22.68 × 9.96
  4. Step 4: Simplify right side
    16.44x = 225.89
  5. Step 5: Solve for x
    x = 225.89/16.44
  6. Step 6: Final answer
    x = 13.74

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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.