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Finding the Third Proportional to 186,603 and 399,827

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Solution

The third proportional to 186,603 and 399,827 is: 856,693.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,603 : 399,827 = 399,827 : x
  2. Step 2: Convert to fraction form
    186,603/399,827 = 399,827/x
  3. Step 3: Cross multiply
    186,603x = 399,827 × 399,827
  4. Step 4: Simplify right side
    186,603x = 159,861,629,929
  5. Step 5: Solve for x
    x = 159,861,629,929/186,603
  6. Step 6: Final answer
    x = 856,693.78

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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.