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Finding the Fourth Proportional to 71,873.70, 99,193.09 and 43,202.65

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Solution

The fourth proportional to 71,873.70, 99,193.09 and 43,202.65 is: 59,624.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,873.70 : 99,193.09 = 43,202.65 : x
  2. Step 2: Convert to fraction form
    71,873.70/99,193.09 = 43,202.65/x
  3. Step 3: Cross multiply
    71,873.70x = 99,193.09 × 43,202.65
  4. Step 4: Simplify right side
    71,873.70x = 4,285,404,233.72
  5. Step 5: Solve for x
    x = 4,285,404,233.72/71,873.70
  6. Step 6: Final answer
    x = 59,624.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.