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Finding the Third Proportional to 916,792.43 and 1,991,217.05

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Solution

The third proportional to 916,792.43 and 1,991,217.05 is: 4,324,801.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,792.43 : 1,991,217.05 = 1,991,217.05 : x
  2. Step 2: Convert to fraction form
    916,792.43/1,991,217.05 = 1,991,217.05/x
  3. Step 3: Cross multiply
    916,792.43x = 1,991,217.05 × 1,991,217.05
  4. Step 4: Simplify right side
    916,792.43x = 3,964,945,330,682.73
  5. Step 5: Solve for x
    x = 3,964,945,330,682.73/916,792.43
  6. Step 6: Final answer
    x = 4,324,801.56

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.