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Finding the Fourth Proportional to 36,698.70, 55,048.05 and 36,309.90

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Solution

The fourth proportional to 36,698.70, 55,048.05 and 36,309.90 is: 54,464.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,698.70 : 55,048.05 = 36,309.90 : x
  2. Step 2: Convert to fraction form
    36,698.70/55,048.05 = 36,309.90/x
  3. Step 3: Cross multiply
    36,698.70x = 55,048.05 × 36,309.90
  4. Step 4: Simplify right side
    36,698.70x = 1,998,789,190.70
  5. Step 5: Solve for x
    x = 1,998,789,190.70/36,698.70
  6. Step 6: Final answer
    x = 54,464.85

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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.