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Finding the Third Proportional to 1,817,215.31 and 3,964,507.31

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Solution

The third proportional to 1,817,215.31 and 3,964,507.31 is: 8,649,122.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817,215.31 : 3,964,507.31 = 3,964,507.31 : x
  2. Step 2: Convert to fraction form
    1,817,215.31/3,964,507.31 = 3,964,507.31/x
  3. Step 3: Cross multiply
    1,817,215.31x = 3,964,507.31 × 3,964,507.31
  4. Step 4: Simplify right side
    1,817,215.31x = 15,717,318,230,865.97
  5. Step 5: Solve for x
    x = 15,717,318,230,865.97/1,817,215.31
  6. Step 6: Final answer
    x = 8,649,122.71

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.