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Finding the Third Proportional to 3,826 and 5,460

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Solution

The third proportional to 3,826 and 5,460 is: 7,791.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826 : 5,460 = 5,460 : x
  2. Step 2: Convert to fraction form
    3,826/5,460 = 5,460/x
  3. Step 3: Cross multiply
    3,826x = 5,460 × 5,460
  4. Step 4: Simplify right side
    3,826x = 29,811,600
  5. Step 5: Solve for x
    x = 29,811,600/3,826
  6. Step 6: Final answer
    x = 7,791.85

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.