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Finding the Third Proportional to 86,869 and 190,345

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Solution

The third proportional to 86,869 and 190,345 is: 417,078.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,869 : 190,345 = 190,345 : x
  2. Step 2: Convert to fraction form
    86,869/190,345 = 190,345/x
  3. Step 3: Cross multiply
    86,869x = 190,345 × 190,345
  4. Step 4: Simplify right side
    86,869x = 36,231,219,025
  5. Step 5: Solve for x
    x = 36,231,219,025/86,869
  6. Step 6: Final answer
    x = 417,078.81

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.