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Finding the Third Proportional to 97,720 and 212,997

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Solution

The third proportional to 97,720 and 212,997 is: 464,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,720 : 212,997 = 212,997 : x
  2. Step 2: Convert to fraction form
    97,720/212,997 = 212,997/x
  3. Step 3: Cross multiply
    97,720x = 212,997 × 212,997
  4. Step 4: Simplify right side
    97,720x = 45,367,722,009
  5. Step 5: Solve for x
    x = 45,367,722,009/97,720
  6. Step 6: Final answer
    x = 464,262.40

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.