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Finding the Third Proportional to 91,621,660 and 197,589,712

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Solution

The third proportional to 91,621,660 and 197,589,712 is: 426,118,608.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,621,660 : 197,589,712 = 197,589,712 : x
  2. Step 2: Convert to fraction form
    91,621,660/197,589,712 = 197,589,712/x
  3. Step 3: Cross multiply
    91,621,660x = 197,589,712 × 197,589,712
  4. Step 4: Simplify right side
    91,621,660x = 39,041,694,288,242,944
  5. Step 5: Solve for x
    x = 39,041,694,288,242,944/91,621,660
  6. Step 6: Final answer
    x = 426,118,608.72

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.