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Finding the Fourth Proportional to 79,082.78, 118,639.98 and 29,163.11

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Solution

The fourth proportional to 79,082.78, 118,639.98 and 29,163.11 is: 43,750.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,082.78 : 118,639.98 = 29,163.11 : x
  2. Step 2: Convert to fraction form
    79,082.78/118,639.98 = 29,163.11/x
  3. Step 3: Cross multiply
    79,082.78x = 118,639.98 × 29,163.11
  4. Step 4: Simplify right side
    79,082.78x = 3,459,910,193.94
  5. Step 5: Solve for x
    x = 3,459,910,193.94/79,082.78
  6. Step 6: Final answer
    x = 43,750.49

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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.