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Finding the Third Proportional to 572 and 874

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Solution

The third proportional to 572 and 874 is: 1,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    572 : 874 = 874 : x
  2. Step 2: Convert to fraction form
    572/874 = 874/x
  3. Step 3: Cross multiply
    572x = 874 × 874
  4. Step 4: Simplify right side
    572x = 763,876
  5. Step 5: Solve for x
    x = 763,876/572
  6. Step 6: Final answer
    x = 1,335.45

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.