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Finding the Fourth Proportional to 18,704.82, 25,812.63 and 10,321.32

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Solution

The fourth proportional to 18,704.82, 25,812.63 and 10,321.32 is: 14,243.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.82 : 25,812.63 = 10,321.32 : x
  2. Step 2: Convert to fraction form
    18,704.82/25,812.63 = 10,321.32/x
  3. Step 3: Cross multiply
    18,704.82x = 25,812.63 × 10,321.32
  4. Step 4: Simplify right side
    18,704.82x = 266,420,414.27
  5. Step 5: Solve for x
    x = 266,420,414.27/18,704.82
  6. Step 6: Final answer
    x = 14,243.41

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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.