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Finding the Fourth Proportional to 68,861.01, 103,205.21 and 29,371.89

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Solution

The fourth proportional to 68,861.01, 103,205.21 and 29,371.89 is: 44,021.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,861.01 : 103,205.21 = 29,371.89 : x
  2. Step 2: Convert to fraction form
    68,861.01/103,205.21 = 29,371.89/x
  3. Step 3: Cross multiply
    68,861.01x = 103,205.21 × 29,371.89
  4. Step 4: Simplify right side
    68,861.01x = 3,031,331,928.69
  5. Step 5: Solve for x
    x = 3,031,331,928.69/68,861.01
  6. Step 6: Final answer
    x = 44,021.02

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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.