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Finding the Third Proportional to 21,930 and 47,604

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Solution

The third proportional to 21,930 and 47,604 is: 103,335.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930 : 47,604 = 47,604 : x
  2. Step 2: Convert to fraction form
    21,930/47,604 = 47,604/x
  3. Step 3: Cross multiply
    21,930x = 47,604 × 47,604
  4. Step 4: Simplify right side
    21,930x = 2,266,140,816
  5. Step 5: Solve for x
    x = 2,266,140,816/21,930
  6. Step 6: Final answer
    x = 103,335.19

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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.