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Finding the Fourth Proportional to 18,755.05, 25,880.92 and 10,255.48

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Solution

The fourth proportional to 18,755.05, 25,880.92 and 10,255.48 is: 14,151.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755.05 : 25,880.92 = 10,255.48 : x
  2. Step 2: Convert to fraction form
    18,755.05/25,880.92 = 10,255.48/x
  3. Step 3: Cross multiply
    18,755.05x = 25,880.92 × 10,255.48
  4. Step 4: Simplify right side
    18,755.05x = 265,421,257.44
  5. Step 5: Solve for x
    x = 265,421,257.44/18,755.05
  6. Step 6: Final answer
    x = 14,151.99

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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.