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Finding the Fourth Proportional to 95.48, 142.91 and 76.24

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Solution

The fourth proportional to 95.48, 142.91 and 76.24 is: 114.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.48 : 142.91 = 76.24 : x
  2. Step 2: Convert to fraction form
    95.48/142.91 = 76.24/x
  3. Step 3: Cross multiply
    95.48x = 142.91 × 76.24
  4. Step 4: Simplify right side
    95.48x = 10,895.97
  5. Step 5: Solve for x
    x = 10,895.97/95.48
  6. Step 6: Final answer
    x = 114.12

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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.