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Finding the Fourth Proportional to 316.23, 474.17 and 110.74

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Solution

The fourth proportional to 316.23, 474.17 and 110.74 is: 166.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.23 : 474.17 = 110.74 : x
  2. Step 2: Convert to fraction form
    316.23/474.17 = 110.74/x
  3. Step 3: Cross multiply
    316.23x = 474.17 × 110.74
  4. Step 4: Simplify right side
    316.23x = 52,509.59
  5. Step 5: Solve for x
    x = 52,509.59/316.23
  6. Step 6: Final answer
    x = 166.05

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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.