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Finding the Third Proportional to 562.50 and 1,521

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Solution

The third proportional to 562.50 and 1,521 is: 4,112.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.50 : 1,521 = 1,521 : x
  2. Step 2: Convert to fraction form
    562.50/1,521 = 1,521/x
  3. Step 3: Cross multiply
    562.50x = 1,521 × 1,521
  4. Step 4: Simplify right side
    562.50x = 2,313,441
  5. Step 5: Solve for x
    x = 2,313,441/562.50
  6. Step 6: Final answer
    x = 4,112.78

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.