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Finding the Third Proportional to 865.69 and 926.44

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Solution

The third proportional to 865.69 and 926.44 is: 991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    865.69 : 926.44 = 926.44 : x
  2. Step 2: Convert to fraction form
    865.69/926.44 = 926.44/x
  3. Step 3: Cross multiply
    865.69x = 926.44 × 926.44
  4. Step 4: Simplify right side
    865.69x = 858,286.44
  5. Step 5: Solve for x
    x = 858,286.44/865.69
  6. Step 6: Final answer
    x = 991.45

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.