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Finding the Fourth Proportional to 28,866, 43,173.91 and 16,991.48

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Solution

The fourth proportional to 28,866, 43,173.91 and 16,991.48 is: 25,413.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,866 : 43,173.91 = 16,991.48 : x
  2. Step 2: Convert to fraction form
    28,866/43,173.91 = 16,991.48/x
  3. Step 3: Cross multiply
    28,866x = 43,173.91 × 16,991.48
  4. Step 4: Simplify right side
    28,866x = 733,588,628.29
  5. Step 5: Solve for x
    x = 733,588,628.29/28,866
  6. Step 6: Final answer
    x = 25,413.59

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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.