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Finding the Third Proportional to 564 and 1,491

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Solution

The third proportional to 564 and 1,491 is: 3,941.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    564 : 1,491 = 1,491 : x
  2. Step 2: Convert to fraction form
    564/1,491 = 1,491/x
  3. Step 3: Cross multiply
    564x = 1,491 × 1,491
  4. Step 4: Simplify right side
    564x = 2,223,081
  5. Step 5: Solve for x
    x = 2,223,081/564
  6. Step 6: Final answer
    x = 3,941.63

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Why These Related Problems?

These problems maintain the same ratio (2.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.