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Finding the Fourth Proportional to 116.54, 174.96 and 111.07

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Solution

The fourth proportional to 116.54, 174.96 and 111.07 is: 166.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.54 : 174.96 = 111.07 : x
  2. Step 2: Convert to fraction form
    116.54/174.96 = 111.07/x
  3. Step 3: Cross multiply
    116.54x = 174.96 × 111.07
  4. Step 4: Simplify right side
    116.54x = 19,433.03
  5. Step 5: Solve for x
    x = 19,433.03/116.54
  6. Step 6: Final answer
    x = 166.75

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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.