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Finding the Fourth Proportional to 79,291.78, 118,926.09 and 23,116.79

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Solution

The fourth proportional to 79,291.78, 118,926.09 and 23,116.79 is: 34,671.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,291.78 : 118,926.09 = 23,116.79 : x
  2. Step 2: Convert to fraction form
    79,291.78/118,926.09 = 23,116.79/x
  3. Step 3: Cross multiply
    79,291.78x = 118,926.09 × 23,116.79
  4. Step 4: Simplify right side
    79,291.78x = 2,749,189,745.37
  5. Step 5: Solve for x
    x = 2,749,189,745.37/79,291.78
  6. Step 6: Final answer
    x = 34,671.81

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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.