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Finding the Fourth Proportional to 79,645.84, 109,910.43 and 43,835.09

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Solution

The fourth proportional to 79,645.84, 109,910.43 and 43,835.09 is: 60,491.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,645.84 : 109,910.43 = 43,835.09 : x
  2. Step 2: Convert to fraction form
    79,645.84/109,910.43 = 43,835.09/x
  3. Step 3: Cross multiply
    79,645.84x = 109,910.43 × 43,835.09
  4. Step 4: Simplify right side
    79,645.84x = 4,817,933,590.99
  5. Step 5: Solve for x
    x = 4,817,933,590.99/79,645.84
  6. Step 6: Final answer
    x = 60,491.97

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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.