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Finding the Fourth Proportional to 96.18, 144.06 and 61.84

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Solution

The fourth proportional to 96.18, 144.06 and 61.84 is: 92.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.18 : 144.06 = 61.84 : x
  2. Step 2: Convert to fraction form
    96.18/144.06 = 61.84/x
  3. Step 3: Cross multiply
    96.18x = 144.06 × 61.84
  4. Step 4: Simplify right side
    96.18x = 8,908.67
  5. Step 5: Solve for x
    x = 8,908.67/96.18
  6. Step 6: Final answer
    x = 92.62

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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.