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Finding the Fourth Proportional to 66,627.80, 91,943.73 and 36,413.48

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Solution

The fourth proportional to 66,627.80, 91,943.73 and 36,413.48 is: 50,249.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,627.80 : 91,943.73 = 36,413.48 : x
  2. Step 2: Convert to fraction form
    66,627.80/91,943.73 = 36,413.48/x
  3. Step 3: Cross multiply
    66,627.80x = 91,943.73 × 36,413.48
  4. Step 4: Simplify right side
    66,627.80x = 3,347,990,713.76
  5. Step 5: Solve for x
    x = 3,347,990,713.76/66,627.80
  6. Step 6: Final answer
    x = 50,249.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.