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Finding the Fourth Proportional to 94.53, 141.60 and 76.41

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Solution

The fourth proportional to 94.53, 141.60 and 76.41 is: 114.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.53 : 141.60 = 76.41 : x
  2. Step 2: Convert to fraction form
    94.53/141.60 = 76.41/x
  3. Step 3: Cross multiply
    94.53x = 141.60 × 76.41
  4. Step 4: Simplify right side
    94.53x = 10,819.66
  5. Step 5: Solve for x
    x = 10,819.66/94.53
  6. Step 6: Final answer
    x = 114.46

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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.