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Finding the Third Proportional to 19,850 and 30,722

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Solution

The third proportional to 19,850 and 30,722 is: 47,548.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,850 : 30,722 = 30,722 : x
  2. Step 2: Convert to fraction form
    19,850/30,722 = 30,722/x
  3. Step 3: Cross multiply
    19,850x = 30,722 × 30,722
  4. Step 4: Simplify right side
    19,850x = 943,841,284
  5. Step 5: Solve for x
    x = 943,841,284/19,850
  6. Step 6: Final answer
    x = 47,548.68

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.