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Finding the Third Proportional to 1,492 and 3,122

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Solution

The third proportional to 1,492 and 3,122 is: 6,532.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492 : 3,122 = 3,122 : x
  2. Step 2: Convert to fraction form
    1,492/3,122 = 3,122/x
  3. Step 3: Cross multiply
    1,492x = 3,122 × 3,122
  4. Step 4: Simplify right side
    1,492x = 9,746,884
  5. Step 5: Solve for x
    x = 9,746,884/1,492
  6. Step 6: Final answer
    x = 6,532.76

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.