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Finding the Third Proportional to 168,639.25 and 359,127

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Solution

The third proportional to 168,639.25 and 359,127 is: 764,781.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,639.25 : 359,127 = 359,127 : x
  2. Step 2: Convert to fraction form
    168,639.25/359,127 = 359,127/x
  3. Step 3: Cross multiply
    168,639.25x = 359,127 × 359,127
  4. Step 4: Simplify right side
    168,639.25x = 128,972,202,129
  5. Step 5: Solve for x
    x = 128,972,202,129/168,639.25
  6. Step 6: Final answer
    x = 764,781.64

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.