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Finding the Fourth Proportional to 16.64, 24.84 and 14.36

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Solution

The fourth proportional to 16.64, 24.84 and 14.36 is: 21.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.64 : 24.84 = 14.36 : x
  2. Step 2: Convert to fraction form
    16.64/24.84 = 14.36/x
  3. Step 3: Cross multiply
    16.64x = 24.84 × 14.36
  4. Step 4: Simplify right side
    16.64x = 356.72
  5. Step 5: Solve for x
    x = 356.72/16.64
  6. Step 6: Final answer
    x = 21.44

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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.