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Finding the Third Proportional to 1,986,890 and 4,291,372

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Solution

The third proportional to 1,986,890 and 4,291,372 is: 9,268,693.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,890 : 4,291,372 = 4,291,372 : x
  2. Step 2: Convert to fraction form
    1,986,890/4,291,372 = 4,291,372/x
  3. Step 3: Cross multiply
    1,986,890x = 4,291,372 × 4,291,372
  4. Step 4: Simplify right side
    1,986,890x = 18,415,873,642,384
  5. Step 5: Solve for x
    x = 18,415,873,642,384/1,986,890
  6. Step 6: Final answer
    x = 9,268,693.10

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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.