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Finding the Third Proportional to 1,853,489 and 3,991,378

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Solution

The third proportional to 1,853,489 and 3,991,378 is: 8,595,194.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853,489 : 3,991,378 = 3,991,378 : x
  2. Step 2: Convert to fraction form
    1,853,489/3,991,378 = 3,991,378/x
  3. Step 3: Cross multiply
    1,853,489x = 3,991,378 × 3,991,378
  4. Step 4: Simplify right side
    1,853,489x = 15,931,098,338,884
  5. Step 5: Solve for x
    x = 15,931,098,338,884/1,853,489
  6. Step 6: Final answer
    x = 8,595,194.44

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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.