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Finding the Fourth Proportional to 25.20, 37.74 and 22.92

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Solution

The fourth proportional to 25.20, 37.74 and 22.92 is: 34.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.20 : 37.74 = 22.92 : x
  2. Step 2: Convert to fraction form
    25.20/37.74 = 22.92/x
  3. Step 3: Cross multiply
    25.20x = 37.74 × 22.92
  4. Step 4: Simplify right side
    25.20x = 865.00
  5. Step 5: Solve for x
    x = 865.00/25.20
  6. Step 6: Final answer
    x = 34.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.