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Finding the Third Proportional to 4,215 and 5,889

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Solution

The third proportional to 4,215 and 5,889 is: 8,227.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215 : 5,889 = 5,889 : x
  2. Step 2: Convert to fraction form
    4,215/5,889 = 5,889/x
  3. Step 3: Cross multiply
    4,215x = 5,889 × 5,889
  4. Step 4: Simplify right side
    4,215x = 34,680,321
  5. Step 5: Solve for x
    x = 34,680,321/4,215
  6. Step 6: Final answer
    x = 8,227.83

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.