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Finding the Third Proportional to 186,578 and 399,752

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Solution

The third proportional to 186,578 and 399,752 is: 856,487.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,578 : 399,752 = 399,752 : x
  2. Step 2: Convert to fraction form
    186,578/399,752 = 399,752/x
  3. Step 3: Cross multiply
    186,578x = 399,752 × 399,752
  4. Step 4: Simplify right side
    186,578x = 159,801,661,504
  5. Step 5: Solve for x
    x = 159,801,661,504/186,578
  6. Step 6: Final answer
    x = 856,487.16

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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.