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Finding the Fourth Proportional to 80,212.91, 110,695.16 and 43,917.53

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Solution

The fourth proportional to 80,212.91, 110,695.16 and 43,917.53 is: 60,606.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,212.91 : 110,695.16 = 43,917.53 : x
  2. Step 2: Convert to fraction form
    80,212.91/110,695.16 = 43,917.53/x
  3. Step 3: Cross multiply
    80,212.91x = 110,695.16 × 43,917.53
  4. Step 4: Simplify right side
    80,212.91x = 4,861,457,566.47
  5. Step 5: Solve for x
    x = 4,861,457,566.47/80,212.91
  6. Step 6: Final answer
    x = 60,606.93

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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.