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Finding the Third Proportional to 186,608 and 399,836

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Solution

The third proportional to 186,608 and 399,836 is: 856,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,608 : 399,836 = 399,836 : x
  2. Step 2: Convert to fraction form
    186,608/399,836 = 399,836/x
  3. Step 3: Cross multiply
    186,608x = 399,836 × 399,836
  4. Step 4: Simplify right side
    186,608x = 159,868,826,896
  5. Step 5: Solve for x
    x = 159,868,826,896/186,608
  6. Step 6: Final answer
    x = 856,709.40

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.