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Finding the Fourth Proportional to 316.26, 474.53 and 110.86

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Solution

The fourth proportional to 316.26, 474.53 and 110.86 is: 166.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.26 : 474.53 = 110.86 : x
  2. Step 2: Convert to fraction form
    316.26/474.53 = 110.86/x
  3. Step 3: Cross multiply
    316.26x = 474.53 × 110.86
  4. Step 4: Simplify right side
    316.26x = 52,604.66
  5. Step 5: Solve for x
    x = 52,604.66/316.26
  6. Step 6: Final answer
    x = 166.33

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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.