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Finding the Fourth Proportional to 16.74, 25.20 and 16.02

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Solution

The fourth proportional to 16.74, 25.20 and 16.02 is: 24.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.74 : 25.20 = 16.02 : x
  2. Step 2: Convert to fraction form
    16.74/25.20 = 16.02/x
  3. Step 3: Cross multiply
    16.74x = 25.20 × 16.02
  4. Step 4: Simplify right side
    16.74x = 403.70
  5. Step 5: Solve for x
    x = 403.70/16.74
  6. Step 6: Final answer
    x = 24.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.