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Finding the Third Proportional to 591 and 1,587

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Solution

The third proportional to 591 and 1,587 is: 4,261.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    591 : 1,587 = 1,587 : x
  2. Step 2: Convert to fraction form
    591/1,587 = 1,587/x
  3. Step 3: Cross multiply
    591x = 1,587 × 1,587
  4. Step 4: Simplify right side
    591x = 2,518,569
  5. Step 5: Solve for x
    x = 2,518,569/591
  6. Step 6: Final answer
    x = 4,261.54

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Why These Related Problems?

These problems maintain the same ratio (2.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.