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Finding the Fourth Proportional to 18,168.91, 25,072.44 and 10,211.57

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Solution

The fourth proportional to 18,168.91, 25,072.44 and 10,211.57 is: 14,091.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,168.91 : 25,072.44 = 10,211.57 : x
  2. Step 2: Convert to fraction form
    18,168.91/25,072.44 = 10,211.57/x
  3. Step 3: Cross multiply
    18,168.91x = 25,072.44 × 10,211.57
  4. Step 4: Simplify right side
    18,168.91x = 256,028,906.50
  5. Step 5: Solve for x
    x = 256,028,906.50/18,168.91
  6. Step 6: Final answer
    x = 14,091.60

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1.5x scale

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.