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Finding the Third Proportional to 815,581.50 and 1,918,911.75

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Solution

The third proportional to 815,581.50 and 1,918,911.75 is: 4,514,842.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,581.50 : 1,918,911.75 = 1,918,911.75 : x
  2. Step 2: Convert to fraction form
    815,581.50/1,918,911.75 = 1,918,911.75/x
  3. Step 3: Cross multiply
    815,581.50x = 1,918,911.75 × 1,918,911.75
  4. Step 4: Simplify right side
    815,581.50x = 3,682,222,304,288.06
  5. Step 5: Solve for x
    x = 3,682,222,304,288.06/815,581.50
  6. Step 6: Final answer
    x = 4,514,842.85

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.