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Finding the Third Proportional to 125.75 and 160.69

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Solution

The third proportional to 125.75 and 160.69 is: 205.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.75 : 160.69 = 160.69 : x
  2. Step 2: Convert to fraction form
    125.75/160.69 = 160.69/x
  3. Step 3: Cross multiply
    125.75x = 160.69 × 160.69
  4. Step 4: Simplify right side
    125.75x = 25,820.47
  5. Step 5: Solve for x
    x = 25,820.47/125.75
  6. Step 6: Final answer
    x = 205.33

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.