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Finding the Fourth Proportional to 63,378.81, 87,463.94 and 36,516.78

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Solution

The fourth proportional to 63,378.81, 87,463.94 and 36,516.78 is: 50,393.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,378.81 : 87,463.94 = 36,516.78 : x
  2. Step 2: Convert to fraction form
    63,378.81/87,463.94 = 36,516.78/x
  3. Step 3: Cross multiply
    63,378.81x = 87,463.94 × 36,516.78
  4. Step 4: Simplify right side
    63,378.81x = 3,193,901,272.33
  5. Step 5: Solve for x
    x = 3,193,901,272.33/63,378.81
  6. Step 6: Final answer
    x = 50,393.83

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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.