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Finding the Fourth Proportional to 79,516.87, 109,736.16 and 43,709.60

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Solution

The fourth proportional to 79,516.87, 109,736.16 and 43,709.60 is: 60,320.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,516.87 : 109,736.16 = 43,709.60 : x
  2. Step 2: Convert to fraction form
    79,516.87/109,736.16 = 43,709.60/x
  3. Step 3: Cross multiply
    79,516.87x = 109,736.16 × 43,709.60
  4. Step 4: Simplify right side
    79,516.87x = 4,796,523,659.14
  5. Step 5: Solve for x
    x = 4,796,523,659.14/79,516.87
  6. Step 6: Final answer
    x = 60,320.83

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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.