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Finding the Third Proportional to 562.78 and 851.94

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Solution

The third proportional to 562.78 and 851.94 is: 1,289.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.78 : 851.94 = 851.94 : x
  2. Step 2: Convert to fraction form
    562.78/851.94 = 851.94/x
  3. Step 3: Cross multiply
    562.78x = 851.94 × 851.94
  4. Step 4: Simplify right side
    562.78x = 725,797.50
  5. Step 5: Solve for x
    x = 725,797.50/562.78
  6. Step 6: Final answer
    x = 1,289.66

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.