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Finding the Fourth Proportional to 79,239.54, 109,349.91 and 43,429.44

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Solution

The fourth proportional to 79,239.54, 109,349.91 and 43,429.44 is: 59,932.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,239.54 : 109,349.91 = 43,429.44 : x
  2. Step 2: Convert to fraction form
    79,239.54/109,349.91 = 43,429.44/x
  3. Step 3: Cross multiply
    79,239.54x = 109,349.91 × 43,429.44
  4. Step 4: Simplify right side
    79,239.54x = 4,749,005,355.35
  5. Step 5: Solve for x
    x = 4,749,005,355.35/79,239.54
  6. Step 6: Final answer
    x = 59,932.27

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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.