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Finding the Fourth Proportional to 16.74, 24.98 and 16.23

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Solution

The fourth proportional to 16.74, 24.98 and 16.23 is: 24.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.74 : 24.98 = 16.23 : x
  2. Step 2: Convert to fraction form
    16.74/24.98 = 16.23/x
  3. Step 3: Cross multiply
    16.74x = 24.98 × 16.23
  4. Step 4: Simplify right side
    16.74x = 405.34
  5. Step 5: Solve for x
    x = 405.34/16.74
  6. Step 6: Final answer
    x = 24.21

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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.