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Finding the Third Proportional to 4,639,198 and 9,996,878

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Solution

The third proportional to 4,639,198 and 9,996,878 is: 21,541,992.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,639,198 : 9,996,878 = 9,996,878 : x
  2. Step 2: Convert to fraction form
    4,639,198/9,996,878 = 9,996,878/x
  3. Step 3: Cross multiply
    4,639,198x = 9,996,878 × 9,996,878
  4. Step 4: Simplify right side
    4,639,198x = 99,937,569,746,884
  5. Step 5: Solve for x
    x = 99,937,569,746,884/4,639,198
  6. Step 6: Final answer
    x = 21,541,992.76

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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.