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Finding the Fourth Proportional to 79,245.81, 118,874.21 and 29,324.79

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Solution

The fourth proportional to 79,245.81, 118,874.21 and 29,324.79 is: 43,989.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,245.81 : 118,874.21 = 29,324.79 : x
  2. Step 2: Convert to fraction form
    79,245.81/118,874.21 = 29,324.79/x
  3. Step 3: Cross multiply
    79,245.81x = 118,874.21 × 29,324.79
  4. Step 4: Simplify right side
    79,245.81x = 3,485,961,098.04
  5. Step 5: Solve for x
    x = 3,485,961,098.04/79,245.81
  6. Step 6: Final answer
    x = 43,989.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.