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Finding the Fourth Proportional to 18,753.45, 25,879.83 and 10,255.44

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Solution

The fourth proportional to 18,753.45, 25,879.83 and 10,255.44 is: 14,152.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,753.45 : 25,879.83 = 10,255.44 : x
  2. Step 2: Convert to fraction form
    18,753.45/25,879.83 = 10,255.44/x
  3. Step 3: Cross multiply
    18,753.45x = 25,879.83 × 10,255.44
  4. Step 4: Simplify right side
    18,753.45x = 265,409,043.78
  5. Step 5: Solve for x
    x = 265,409,043.78/18,753.45
  6. Step 6: Final answer
    x = 14,152.54

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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.