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Finding the Third Proportional to 5,648 and 8,695

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Solution

The third proportional to 5,648 and 8,695 is: 13,385.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,648 : 8,695 = 8,695 : x
  2. Step 2: Convert to fraction form
    5,648/8,695 = 8,695/x
  3. Step 3: Cross multiply
    5,648x = 8,695 × 8,695
  4. Step 4: Simplify right side
    5,648x = 75,603,025
  5. Step 5: Solve for x
    x = 75,603,025/5,648
  6. Step 6: Final answer
    x = 13,385.80

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.