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Finding the Third Proportional to 1,986,881 and 4,291,355

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Solution

The third proportional to 1,986,881 and 4,291,355 is: 9,268,661.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,881 : 4,291,355 = 4,291,355 : x
  2. Step 2: Convert to fraction form
    1,986,881/4,291,355 = 4,291,355/x
  3. Step 3: Cross multiply
    1,986,881x = 4,291,355 × 4,291,355
  4. Step 4: Simplify right side
    1,986,881x = 18,415,727,736,025
  5. Step 5: Solve for x
    x = 18,415,727,736,025/1,986,881
  6. Step 6: Final answer
    x = 9,268,661.65

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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.