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Finding the Third Proportional to 3,591 and 3,888

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Solution

The third proportional to 3,591 and 3,888 is: 4,209.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591 : 3,888 = 3,888 : x
  2. Step 2: Convert to fraction form
    3,591/3,888 = 3,888/x
  3. Step 3: Cross multiply
    3,591x = 3,888 × 3,888
  4. Step 4: Simplify right side
    3,591x = 15,116,544
  5. Step 5: Solve for x
    x = 15,116,544/3,591
  6. Step 6: Final answer
    x = 4,209.56

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.