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Finding the Fourth Proportional to 316.24, 474.41 and 110.76

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Solution

The fourth proportional to 316.24, 474.41 and 110.76 is: 166.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.24 : 474.41 = 110.76 : x
  2. Step 2: Convert to fraction form
    316.24/474.41 = 110.76/x
  3. Step 3: Cross multiply
    316.24x = 474.41 × 110.76
  4. Step 4: Simplify right side
    316.24x = 52,545.86
  5. Step 5: Solve for x
    x = 52,545.86/316.24
  6. Step 6: Final answer
    x = 166.16

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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.