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Finding the Fourth Proportional to 62,286.78, 85,956.21 and 33,991.86

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Solution

The fourth proportional to 62,286.78, 85,956.21 and 33,991.86 is: 46,909.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,286.78 : 85,956.21 = 33,991.86 : x
  2. Step 2: Convert to fraction form
    62,286.78/85,956.21 = 33,991.86/x
  3. Step 3: Cross multiply
    62,286.78x = 85,956.21 × 33,991.86
  4. Step 4: Simplify right side
    62,286.78x = 2,921,811,456.45
  5. Step 5: Solve for x
    x = 2,921,811,456.45/62,286.78
  6. Step 6: Final answer
    x = 46,909.01

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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.