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Finding the Third Proportional to 1,442 and 3,112

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Solution

The third proportional to 1,442 and 3,112 is: 6,716.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442 : 3,112 = 3,112 : x
  2. Step 2: Convert to fraction form
    1,442/3,112 = 3,112/x
  3. Step 3: Cross multiply
    1,442x = 3,112 × 3,112
  4. Step 4: Simplify right side
    1,442x = 9,684,544
  5. Step 5: Solve for x
    x = 9,684,544/1,442
  6. Step 6: Final answer
    x = 6,716.05

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.