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Finding the Third Proportional to 1,491 and 3,222

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Solution

The third proportional to 1,491 and 3,222 is: 6,962.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491 : 3,222 = 3,222 : x
  2. Step 2: Convert to fraction form
    1,491/3,222 = 3,222/x
  3. Step 3: Cross multiply
    1,491x = 3,222 × 3,222
  4. Step 4: Simplify right side
    1,491x = 10,381,284
  5. Step 5: Solve for x
    x = 10,381,284/1,491
  6. Step 6: Final answer
    x = 6,962.63

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.