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Finding the Third Proportional to 808 and 1,112

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Solution

The third proportional to 808 and 1,112 is: 1,530.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    808 : 1,112 = 1,112 : x
  2. Step 2: Convert to fraction form
    808/1,112 = 1,112/x
  3. Step 3: Cross multiply
    808x = 1,112 × 1,112
  4. Step 4: Simplify right side
    808x = 1,236,544
  5. Step 5: Solve for x
    x = 1,236,544/808
  6. Step 6: Final answer
    x = 1,530.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.