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Finding the Fourth Proportional to 16.96, 25.30 and 16.28

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Solution

The fourth proportional to 16.96, 25.30 and 16.28 is: 24.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.96 : 25.30 = 16.28 : x
  2. Step 2: Convert to fraction form
    16.96/25.30 = 16.28/x
  3. Step 3: Cross multiply
    16.96x = 25.30 × 16.28
  4. Step 4: Simplify right side
    16.96x = 411.88
  5. Step 5: Solve for x
    x = 411.88/16.96
  6. Step 6: Final answer
    x = 24.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.