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Finding the Fourth Proportional to 79,212.73, 109,313.51 and 43,404.97

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Solution

The fourth proportional to 79,212.73, 109,313.51 and 43,404.97 is: 59,898.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,212.73 : 109,313.51 = 43,404.97 : x
  2. Step 2: Convert to fraction form
    79,212.73/109,313.51 = 43,404.97/x
  3. Step 3: Cross multiply
    79,212.73x = 109,313.51 × 43,404.97
  4. Step 4: Simplify right side
    79,212.73x = 4,744,749,405.12
  5. Step 5: Solve for x
    x = 4,744,749,405.12/79,212.73
  6. Step 6: Final answer
    x = 59,898.82

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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.