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Finding the Fourth Proportional to 18,755.70, 25,881.98 and 10,257.99

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Solution

The fourth proportional to 18,755.70, 25,881.98 and 10,257.99 is: 14,155.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755.70 : 25,881.98 = 10,257.99 : x
  2. Step 2: Convert to fraction form
    18,755.70/25,881.98 = 10,257.99/x
  3. Step 3: Cross multiply
    18,755.70x = 25,881.98 × 10,257.99
  4. Step 4: Simplify right side
    18,755.70x = 265,497,040.73
  5. Step 5: Solve for x
    x = 265,497,040.73/18,755.70
  6. Step 6: Final answer
    x = 14,155.54

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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.