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Finding the Fourth Proportional to 24.42, 33.64 and 23.20

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Solution

The fourth proportional to 24.42, 33.64 and 23.20 is: 31.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    24.42 : 33.64 = 23.20 : x
  2. Step 2: Convert to fraction form
    24.42/33.64 = 23.20/x
  3. Step 3: Cross multiply
    24.42x = 33.64 × 23.20
  4. Step 4: Simplify right side
    24.42x = 780.45
  5. Step 5: Solve for x
    x = 780.45/24.42
  6. Step 6: Final answer
    x = 31.96

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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.