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Finding the Fourth Proportional to 408,795.56, 612,987.26 and 124,431.56

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Solution

The fourth proportional to 408,795.56, 612,987.26 and 124,431.56 is: 186,584.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,795.56 : 612,987.26 = 124,431.56 : x
  2. Step 2: Convert to fraction form
    408,795.56/612,987.26 = 124,431.56/x
  3. Step 3: Cross multiply
    408,795.56x = 612,987.26 × 124,431.56
  4. Step 4: Simplify right side
    408,795.56x = 76,274,961,021.93
  5. Step 5: Solve for x
    x = 76,274,961,021.93/408,795.56
  6. Step 6: Final answer
    x = 186,584.61

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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.