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Finding the Fourth Proportional to 22.22, 30.67 and 12.52

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Solution

The fourth proportional to 22.22, 30.67 and 12.52 is: 17.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.22 : 30.67 = 12.52 : x
  2. Step 2: Convert to fraction form
    22.22/30.67 = 12.52/x
  3. Step 3: Cross multiply
    22.22x = 30.67 × 12.52
  4. Step 4: Simplify right side
    22.22x = 383.88
  5. Step 5: Solve for x
    x = 383.88/22.22
  6. Step 6: Final answer
    x = 17.27

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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.