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Finding the Fourth Proportional to 36,661.62, 54,991.95 and 8,959.86

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Solution

The fourth proportional to 36,661.62, 54,991.95 and 8,959.86 is: 13,439.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,661.62 : 54,991.95 = 8,959.86 : x
  2. Step 2: Convert to fraction form
    36,661.62/54,991.95 = 8,959.86/x
  3. Step 3: Cross multiply
    36,661.62x = 54,991.95 × 8,959.86
  4. Step 4: Simplify right side
    36,661.62x = 492,720,173.13
  5. Step 5: Solve for x
    x = 492,720,173.13/36,661.62
  6. Step 6: Final answer
    x = 13,439.67

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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.