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Finding the Fourth Proportional to 96.46, 144.47 and 76.11

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Solution

The fourth proportional to 96.46, 144.47 and 76.11 is: 113.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.46 : 144.47 = 76.11 : x
  2. Step 2: Convert to fraction form
    96.46/144.47 = 76.11/x
  3. Step 3: Cross multiply
    96.46x = 144.47 × 76.11
  4. Step 4: Simplify right side
    96.46x = 10,995.23
  5. Step 5: Solve for x
    x = 10,995.23/96.46
  6. Step 6: Final answer
    x = 113.99

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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.