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Finding the Third Proportional to 3,587 and 7,884

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Solution

The third proportional to 3,587 and 7,884 is: 17,328.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,587 : 7,884 = 7,884 : x
  2. Step 2: Convert to fraction form
    3,587/7,884 = 7,884/x
  3. Step 3: Cross multiply
    3,587x = 7,884 × 7,884
  4. Step 4: Simplify right side
    3,587x = 62,157,456
  5. Step 5: Solve for x
    x = 62,157,456/3,587
  6. Step 6: Final answer
    x = 17,328.54

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.