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Finding the Fourth Proportional to 18,752.98, 25,879.49 and 10,255.64

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Solution

The fourth proportional to 18,752.98, 25,879.49 and 10,255.64 is: 14,152.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.98 : 25,879.49 = 10,255.64 : x
  2. Step 2: Convert to fraction form
    18,752.98/25,879.49 = 10,255.64/x
  3. Step 3: Cross multiply
    18,752.98x = 25,879.49 × 10,255.64
  4. Step 4: Simplify right side
    18,752.98x = 265,410,732.82
  5. Step 5: Solve for x
    x = 265,410,732.82/18,752.98
  6. Step 6: Final answer
    x = 14,152.99

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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.