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Finding the Fourth Proportional to 316.23, 474.16 and 110.76

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Solution

The fourth proportional to 316.23, 474.16 and 110.76 is: 166.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.23 : 474.16 = 110.76 : x
  2. Step 2: Convert to fraction form
    316.23/474.16 = 110.76/x
  3. Step 3: Cross multiply
    316.23x = 474.16 × 110.76
  4. Step 4: Simplify right side
    316.23x = 52,517.96
  5. Step 5: Solve for x
    x = 52,517.96/316.23
  6. Step 6: Final answer
    x = 166.08

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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.