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Finding the Fourth Proportional to 96.52, 144.74 and 64.66

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Solution

The fourth proportional to 96.52, 144.74 and 64.66 is: 96.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.52 : 144.74 = 64.66 : x
  2. Step 2: Convert to fraction form
    96.52/144.74 = 64.66/x
  3. Step 3: Cross multiply
    96.52x = 144.74 × 64.66
  4. Step 4: Simplify right side
    96.52x = 9,358.89
  5. Step 5: Solve for x
    x = 9,358.89/96.52
  6. Step 6: Final answer
    x = 96.96

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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.