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Finding the Fourth Proportional to 18,662.98, 25,755.50 and 10,165.36

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Solution

The fourth proportional to 18,662.98, 25,755.50 and 10,165.36 is: 14,028.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.98 : 25,755.50 = 10,165.36 : x
  2. Step 2: Convert to fraction form
    18,662.98/25,755.50 = 10,165.36/x
  3. Step 3: Cross multiply
    18,662.98x = 25,755.50 × 10,165.36
  4. Step 4: Simplify right side
    18,662.98x = 261,813,749.88
  5. Step 5: Solve for x
    x = 261,813,749.88/18,662.98
  6. Step 6: Final answer
    x = 14,028.51

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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.