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Finding the Third Proportional to 5,978 and 6,826

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Solution

The third proportional to 5,978 and 6,826 is: 7,794.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978 : 6,826 = 6,826 : x
  2. Step 2: Convert to fraction form
    5,978/6,826 = 6,826/x
  3. Step 3: Cross multiply
    5,978x = 6,826 × 6,826
  4. Step 4: Simplify right side
    5,978x = 46,594,276
  5. Step 5: Solve for x
    x = 46,594,276/5,978
  6. Step 6: Final answer
    x = 7,794.29

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.