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Finding the Fourth Proportional to 16.55, 22.84 and 9.27

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Solution

The fourth proportional to 16.55, 22.84 and 9.27 is: 12.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.55 : 22.84 = 9.27 : x
  2. Step 2: Convert to fraction form
    16.55/22.84 = 9.27/x
  3. Step 3: Cross multiply
    16.55x = 22.84 × 9.27
  4. Step 4: Simplify right side
    16.55x = 211.73
  5. Step 5: Solve for x
    x = 211.73/16.55
  6. Step 6: Final answer
    x = 12.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.