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Finding the Fourth Proportional to 71,879.08, 107,774.70 and 34,450.60

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Solution

The fourth proportional to 71,879.08, 107,774.70 and 34,450.60 is: 51,654.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,879.08 : 107,774.70 = 34,450.60 : x
  2. Step 2: Convert to fraction form
    71,879.08/107,774.70 = 34,450.60/x
  3. Step 3: Cross multiply
    71,879.08x = 107,774.70 × 34,450.60
  4. Step 4: Simplify right side
    71,879.08x = 3,712,903,079.82
  5. Step 5: Solve for x
    x = 3,712,903,079.82/71,879.08
  6. Step 6: Final answer
    x = 51,654.85

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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.