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Finding the Third Proportional to 4,890 and 5,586

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Solution

The third proportional to 4,890 and 5,586 is: 6,381.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890 : 5,586 = 5,586 : x
  2. Step 2: Convert to fraction form
    4,890/5,586 = 5,586/x
  3. Step 3: Cross multiply
    4,890x = 5,586 × 5,586
  4. Step 4: Simplify right side
    4,890x = 31,203,396
  5. Step 5: Solve for x
    x = 31,203,396/4,890
  6. Step 6: Final answer
    x = 6,381.06

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.