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Finding the Third Proportional to 186,931 and 407,696

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Solution

The third proportional to 186,931 and 407,696 is: 889,183.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,931 : 407,696 = 407,696 : x
  2. Step 2: Convert to fraction form
    186,931/407,696 = 407,696/x
  3. Step 3: Cross multiply
    186,931x = 407,696 × 407,696
  4. Step 4: Simplify right side
    186,931x = 166,216,028,416
  5. Step 5: Solve for x
    x = 166,216,028,416/186,931
  6. Step 6: Final answer
    x = 889,183.86

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.