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Finding the Third Proportional to 5,112 and 6,822

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Solution

The third proportional to 5,112 and 6,822 is: 9,104.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112 : 6,822 = 6,822 : x
  2. Step 2: Convert to fraction form
    5,112/6,822 = 6,822/x
  3. Step 3: Cross multiply
    5,112x = 6,822 × 6,822
  4. Step 4: Simplify right side
    5,112x = 46,539,684
  5. Step 5: Solve for x
    x = 46,539,684/5,112
  6. Step 6: Final answer
    x = 9,104.01

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.