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Finding the Fourth Proportional to 40,999.80, 61,413.30 and 34,087.80

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Solution

The fourth proportional to 40,999.80, 61,413.30 and 34,087.80 is: 51,059.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,999.80 : 61,413.30 = 34,087.80 : x
  2. Step 2: Convert to fraction form
    40,999.80/61,413.30 = 34,087.80/x
  3. Step 3: Cross multiply
    40,999.80x = 61,413.30 × 34,087.80
  4. Step 4: Simplify right side
    40,999.80x = 2,093,444,287.74
  5. Step 5: Solve for x
    x = 2,093,444,287.74/40,999.80
  6. Step 6: Final answer
    x = 51,059.87

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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.