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Finding the Fourth Proportional to 18,796.46, 25,879.93 and 15,958.22

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Solution

The fourth proportional to 18,796.46, 25,879.93 and 15,958.22 is: 21,972.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.46 : 25,879.93 = 15,958.22 : x
  2. Step 2: Convert to fraction form
    18,796.46/25,879.93 = 15,958.22/x
  3. Step 3: Cross multiply
    18,796.46x = 25,879.93 × 15,958.22
  4. Step 4: Simplify right side
    18,796.46x = 412,997,487.12
  5. Step 5: Solve for x
    x = 412,997,487.12/18,796.46
  6. Step 6: Final answer
    x = 21,972.09

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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.