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Finding the Third Proportional to 842 and 1,016

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Solution

The third proportional to 842 and 1,016 is: 1,225.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    842 : 1,016 = 1,016 : x
  2. Step 2: Convert to fraction form
    842/1,016 = 1,016/x
  3. Step 3: Cross multiply
    842x = 1,016 × 1,016
  4. Step 4: Simplify right side
    842x = 1,032,256
  5. Step 5: Solve for x
    x = 1,032,256/842
  6. Step 6: Final answer
    x = 1,225.96

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.