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Finding the Third Proportional to 412,869 and 863,190

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Solution

The third proportional to 412,869 and 863,190 is: 1,804,681.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,869 : 863,190 = 863,190 : x
  2. Step 2: Convert to fraction form
    412,869/863,190 = 863,190/x
  3. Step 3: Cross multiply
    412,869x = 863,190 × 863,190
  4. Step 4: Simplify right side
    412,869x = 745,096,976,100
  5. Step 5: Solve for x
    x = 745,096,976,100/412,869
  6. Step 6: Final answer
    x = 1,804,681.33

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.