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Finding the Third Proportional to 5,641 and 8,465

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Solution

The third proportional to 5,641 and 8,465 is: 12,702.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641 : 8,465 = 8,465 : x
  2. Step 2: Convert to fraction form
    5,641/8,465 = 8,465/x
  3. Step 3: Cross multiply
    5,641x = 8,465 × 8,465
  4. Step 4: Simplify right side
    5,641x = 71,656,225
  5. Step 5: Solve for x
    x = 71,656,225/5,641
  6. Step 6: Final answer
    x = 12,702.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.