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Finding the Fourth Proportional to 15,172.56, 20,936.84 and 8,884.88

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Solution

The fourth proportional to 15,172.56, 20,936.84 and 8,884.88 is: 12,260.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.56 : 20,936.84 = 8,884.88 : x
  2. Step 2: Convert to fraction form
    15,172.56/20,936.84 = 8,884.88/x
  3. Step 3: Cross multiply
    15,172.56x = 20,936.84 × 8,884.88
  4. Step 4: Simplify right side
    15,172.56x = 186,021,310.98
  5. Step 5: Solve for x
    x = 186,021,310.98/15,172.56
  6. Step 6: Final answer
    x = 12,260.38

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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.