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Finding the Fourth Proportional to 48,993.72, 73,495.44 and 19,431.96

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Solution

The fourth proportional to 48,993.72, 73,495.44 and 19,431.96 is: 29,149.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,993.72 : 73,495.44 = 19,431.96 : x
  2. Step 2: Convert to fraction form
    48,993.72/73,495.44 = 19,431.96/x
  3. Step 3: Cross multiply
    48,993.72x = 73,495.44 × 19,431.96
  4. Step 4: Simplify right side
    48,993.72x = 1,428,160,450.26
  5. Step 5: Solve for x
    x = 1,428,160,450.26/48,993.72
  6. Step 6: Final answer
    x = 29,149.87

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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.