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Finding the Third Proportional to 56,578 and 83,211

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Solution

The third proportional to 56,578 and 83,211 is: 122,380.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,578 : 83,211 = 83,211 : x
  2. Step 2: Convert to fraction form
    56,578/83,211 = 83,211/x
  3. Step 3: Cross multiply
    56,578x = 83,211 × 83,211
  4. Step 4: Simplify right side
    56,578x = 6,924,070,521
  5. Step 5: Solve for x
    x = 6,924,070,521/56,578
  6. Step 6: Final answer
    x = 122,380.97

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.