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Finding the Fourth Proportional to 408,661.43, 613,015.20 and 124,361.26

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Solution

The fourth proportional to 408,661.43, 613,015.20 and 124,361.26 is: 186,548.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,661.43 : 613,015.20 = 124,361.26 : x
  2. Step 2: Convert to fraction form
    408,661.43/613,015.20 = 124,361.26/x
  3. Step 3: Cross multiply
    408,661.43x = 613,015.20 × 124,361.26
  4. Step 4: Simplify right side
    408,661.43x = 76,235,341,138.61
  5. Step 5: Solve for x
    x = 76,235,341,138.61/408,661.43
  6. Step 6: Final answer
    x = 186,548.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.