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Finding the Fourth Proportional to 18,203.85, 25,120.26 and 10,245.74

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Solution

The fourth proportional to 18,203.85, 25,120.26 and 10,245.74 is: 14,138.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.85 : 25,120.26 = 10,245.74 : x
  2. Step 2: Convert to fraction form
    18,203.85/25,120.26 = 10,245.74/x
  3. Step 3: Cross multiply
    18,203.85x = 25,120.26 × 10,245.74
  4. Step 4: Simplify right side
    18,203.85x = 257,375,527.09
  5. Step 5: Solve for x
    x = 257,375,527.09/18,203.85
  6. Step 6: Final answer
    x = 14,138.52

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