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Finding the Third Proportional to 578 and 1,252

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Solution

The third proportional to 578 and 1,252 is: 2,711.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    578 : 1,252 = 1,252 : x
  2. Step 2: Convert to fraction form
    578/1,252 = 1,252/x
  3. Step 3: Cross multiply
    578x = 1,252 × 1,252
  4. Step 4: Simplify right side
    578x = 1,567,504
  5. Step 5: Solve for x
    x = 1,567,504/578
  6. Step 6: Final answer
    x = 2,711.94

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.