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Finding the Third Proportional to 186,984 and 400,208

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Solution

The third proportional to 186,984 and 400,208 is: 856,578.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,984 : 400,208 = 400,208 : x
  2. Step 2: Convert to fraction form
    186,984/400,208 = 400,208/x
  3. Step 3: Cross multiply
    186,984x = 400,208 × 400,208
  4. Step 4: Simplify right side
    186,984x = 160,166,443,264
  5. Step 5: Solve for x
    x = 160,166,443,264/186,984
  6. Step 6: Final answer
    x = 856,578.33

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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.