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Finding the Third Proportional to 5,612 and 8,319

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Solution

The third proportional to 5,612 and 8,319 is: 12,331.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,612 : 8,319 = 8,319 : x
  2. Step 2: Convert to fraction form
    5,612/8,319 = 8,319/x
  3. Step 3: Cross multiply
    5,612x = 8,319 × 8,319
  4. Step 4: Simplify right side
    5,612x = 69,205,761
  5. Step 5: Solve for x
    x = 69,205,761/5,612
  6. Step 6: Final answer
    x = 12,331.75

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.