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Finding the Fourth Proportional to 36,641.99, 55,006.83 and 21,857.87

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Solution

The fourth proportional to 36,641.99, 55,006.83 and 21,857.87 is: 32,812.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,641.99 : 55,006.83 = 21,857.87 : x
  2. Step 2: Convert to fraction form
    36,641.99/55,006.83 = 21,857.87/x
  3. Step 3: Cross multiply
    36,641.99x = 55,006.83 × 21,857.87
  4. Step 4: Simplify right side
    36,641.99x = 1,202,332,276.77
  5. Step 5: Solve for x
    x = 1,202,332,276.77/36,641.99
  6. Step 6: Final answer
    x = 32,812.96

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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.