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Finding the Fourth Proportional to 18,796.86, 28,186.29 and 6,313.42

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Solution

The fourth proportional to 18,796.86, 28,186.29 and 6,313.42 is: 9,467.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.86 : 28,186.29 = 6,313.42 : x
  2. Step 2: Convert to fraction form
    18,796.86/28,186.29 = 6,313.42/x
  3. Step 3: Cross multiply
    18,796.86x = 28,186.29 × 6,313.42
  4. Step 4: Simplify right side
    18,796.86x = 177,951,887.01
  5. Step 5: Solve for x
    x = 177,951,887.01/18,796.86
  6. Step 6: Final answer
    x = 9,467.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.