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Finding the Fourth Proportional to 61.74, 92.56 and 29.22

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Solution

The fourth proportional to 61.74, 92.56 and 29.22 is: 43.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.74 : 92.56 = 29.22 : x
  2. Step 2: Convert to fraction form
    61.74/92.56 = 29.22/x
  3. Step 3: Cross multiply
    61.74x = 92.56 × 29.22
  4. Step 4: Simplify right side
    61.74x = 2,704.48
  5. Step 5: Solve for x
    x = 2,704.48/61.74
  6. Step 6: Final answer
    x = 43.81

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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.