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Finding the Third Proportional to 43,621,890 and 91,756,460

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Solution

The third proportional to 43,621,890 and 91,756,460 is: 193,005,116.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,621,890 : 91,756,460 = 91,756,460 : x
  2. Step 2: Convert to fraction form
    43,621,890/91,756,460 = 91,756,460/x
  3. Step 3: Cross multiply
    43,621,890x = 91,756,460 × 91,756,460
  4. Step 4: Simplify right side
    43,621,890x = 8,419,247,951,731,600
  5. Step 5: Solve for x
    x = 8,419,247,951,731,600/43,621,890
  6. Step 6: Final answer
    x = 193,005,116.28

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.