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Finding the Fourth Proportional to 66,413.52, 99,620.10 and 22,043.61

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Solution

The fourth proportional to 66,413.52, 99,620.10 and 22,043.61 is: 33,065.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,413.52 : 99,620.10 = 22,043.61 : x
  2. Step 2: Convert to fraction form
    66,413.52/99,620.10 = 22,043.61/x
  3. Step 3: Cross multiply
    66,413.52x = 99,620.10 × 22,043.61
  4. Step 4: Simplify right side
    66,413.52x = 2,195,986,632.56
  5. Step 5: Solve for x
    x = 2,195,986,632.56/66,413.52
  6. Step 6: Final answer
    x = 33,065.36

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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.