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Finding the Fourth Proportional to 23.70, 32.87 and 22.48

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Solution

The fourth proportional to 23.70, 32.87 and 22.48 is: 31.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.70 : 32.87 = 22.48 : x
  2. Step 2: Convert to fraction form
    23.70/32.87 = 22.48/x
  3. Step 3: Cross multiply
    23.70x = 32.87 × 22.48
  4. Step 4: Simplify right side
    23.70x = 738.92
  5. Step 5: Solve for x
    x = 738.92/23.70
  6. Step 6: Final answer
    x = 31.18

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.