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Finding the Third Proportional to 1,986,638 and 4,290,817

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Solution

The third proportional to 1,986,638 and 4,290,817 is: 9,267,471.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,638 : 4,290,817 = 4,290,817 : x
  2. Step 2: Convert to fraction form
    1,986,638/4,290,817 = 4,290,817/x
  3. Step 3: Cross multiply
    1,986,638x = 4,290,817 × 4,290,817
  4. Step 4: Simplify right side
    1,986,638x = 18,411,110,527,489
  5. Step 5: Solve for x
    x = 18,411,110,527,489/1,986,638
  6. Step 6: Final answer
    x = 9,267,471.24

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.