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Finding the Third Proportional to 391,410.56 and 834,078.94

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Solution

The third proportional to 391,410.56 and 834,078.94 is: 1,777,386.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,410.56 : 834,078.94 = 834,078.94 : x
  2. Step 2: Convert to fraction form
    391,410.56/834,078.94 = 834,078.94/x
  3. Step 3: Cross multiply
    391,410.56x = 834,078.94 × 834,078.94
  4. Step 4: Simplify right side
    391,410.56x = 695,687,673,981.13
  5. Step 5: Solve for x
    x = 695,687,673,981.13/391,410.56
  6. Step 6: Final answer
    x = 1,777,386.05

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.