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Finding the Third Proportional to 99,190,662 and 213,580,812

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Solution

The third proportional to 99,190,662 and 213,580,812 is: 459,889,694.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,190,662 : 213,580,812 = 213,580,812 : x
  2. Step 2: Convert to fraction form
    99,190,662/213,580,812 = 213,580,812/x
  3. Step 3: Cross multiply
    99,190,662x = 213,580,812 × 213,580,812
  4. Step 4: Simplify right side
    99,190,662x = 45,616,763,254,579,344
  5. Step 5: Solve for x
    x = 45,616,763,254,579,344/99,190,662
  6. Step 6: Final answer
    x = 459,889,694.60

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.