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Finding the Third Proportional to 186,930.75 and 405,410.25

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Solution

The third proportional to 186,930.75 and 405,410.25 is: 879,242.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,930.75 : 405,410.25 = 405,410.25 : x
  2. Step 2: Convert to fraction form
    186,930.75/405,410.25 = 405,410.25/x
  3. Step 3: Cross multiply
    186,930.75x = 405,410.25 × 405,410.25
  4. Step 4: Simplify right side
    186,930.75x = 164,357,470,805.06
  5. Step 5: Solve for x
    x = 164,357,470,805.06/186,930.75
  6. Step 6: Final answer
    x = 879,242.56

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.