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Finding the Fourth Proportional to 79,143.74, 118,702.92 and 29,247.38

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Solution

The fourth proportional to 79,143.74, 118,702.92 and 29,247.38 is: 43,866.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,143.74 : 118,702.92 = 29,247.38 : x
  2. Step 2: Convert to fraction form
    79,143.74/118,702.92 = 29,247.38/x
  3. Step 3: Cross multiply
    79,143.74x = 118,702.92 × 29,247.38
  4. Step 4: Simplify right side
    79,143.74x = 3,471,749,408.35
  5. Step 5: Solve for x
    x = 3,471,749,408.35/79,143.74
  6. Step 6: Final answer
    x = 43,866.38

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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.