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Finding the Fourth Proportional to 94.42, 141.60 and 61.96

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Solution

The fourth proportional to 94.42, 141.60 and 61.96 is: 92.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.42 : 141.60 = 61.96 : x
  2. Step 2: Convert to fraction form
    94.42/141.60 = 61.96/x
  3. Step 3: Cross multiply
    94.42x = 141.60 × 61.96
  4. Step 4: Simplify right side
    94.42x = 8,773.54
  5. Step 5: Solve for x
    x = 8,773.54/94.42
  6. Step 6: Final answer
    x = 92.92

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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.