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Finding the Fourth Proportional to 408,669.38, 613,027.14 and 124,369.21

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Solution

The fourth proportional to 408,669.38, 613,027.14 and 124,369.21 is: 186,560.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,669.38 : 613,027.14 = 124,369.21 : x
  2. Step 2: Convert to fraction form
    408,669.38/613,027.14 = 124,369.21/x
  3. Step 3: Cross multiply
    408,669.38x = 613,027.14 × 124,369.21
  4. Step 4: Simplify right side
    408,669.38x = 76,241,697,961.98
  5. Step 5: Solve for x
    x = 76,241,697,961.98/408,669.38
  6. Step 6: Final answer
    x = 186,560.83

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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.