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Finding the Fourth Proportional to 36,039.76, 54,064.80 and 11,081.90

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Solution

The fourth proportional to 36,039.76, 54,064.80 and 11,081.90 is: 16,624.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,039.76 : 54,064.80 = 11,081.90 : x
  2. Step 2: Convert to fraction form
    36,039.76/54,064.80 = 11,081.90/x
  3. Step 3: Cross multiply
    36,039.76x = 54,064.80 × 11,081.90
  4. Step 4: Simplify right side
    36,039.76x = 599,140,707.12
  5. Step 5: Solve for x
    x = 599,140,707.12/36,039.76
  6. Step 6: Final answer
    x = 16,624.44

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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.