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Finding the Third Proportional to 4,694 and 6,820

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Solution

The third proportional to 4,694 and 6,820 is: 9,908.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,694 : 6,820 = 6,820 : x
  2. Step 2: Convert to fraction form
    4,694/6,820 = 6,820/x
  3. Step 3: Cross multiply
    4,694x = 6,820 × 6,820
  4. Step 4: Simplify right side
    4,694x = 46,512,400
  5. Step 5: Solve for x
    x = 46,512,400/4,694
  6. Step 6: Final answer
    x = 9,908.90

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.