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Finding the Fourth Proportional to 104,299.88, 156,449.34 and 25,413.80

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Solution

The fourth proportional to 104,299.88, 156,449.34 and 25,413.80 is: 38,120.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,299.88 : 156,449.34 = 25,413.80 : x
  2. Step 2: Convert to fraction form
    104,299.88/156,449.34 = 25,413.80/x
  3. Step 3: Cross multiply
    104,299.88x = 156,449.34 × 25,413.80
  4. Step 4: Simplify right side
    104,299.88x = 3,975,972,236.89
  5. Step 5: Solve for x
    x = 3,975,972,236.89/104,299.88
  6. Step 6: Final answer
    x = 38,120.58

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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.