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Finding the Fourth Proportional to 16.67, 22.85 and 16.36

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Solution

The fourth proportional to 16.67, 22.85 and 16.36 is: 22.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.67 : 22.85 = 16.36 : x
  2. Step 2: Convert to fraction form
    16.67/22.85 = 16.36/x
  3. Step 3: Cross multiply
    16.67x = 22.85 × 16.36
  4. Step 4: Simplify right side
    16.67x = 373.90
  5. Step 5: Solve for x
    x = 373.90/16.67
  6. Step 6: Final answer
    x = 22.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.