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Finding the Fourth Proportional to 115,991.20, 173,674.98 and 73,641.96

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Solution

The fourth proportional to 115,991.20, 173,674.98 and 73,641.96 is: 110,264.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,991.20 : 173,674.98 = 73,641.96 : x
  2. Step 2: Convert to fraction form
    115,991.20/173,674.98 = 73,641.96/x
  3. Step 3: Cross multiply
    115,991.20x = 173,674.98 × 73,641.96
  4. Step 4: Simplify right side
    115,991.20x = 12,789,765,930.16
  5. Step 5: Solve for x
    x = 12,789,765,930.16/115,991.20
  6. Step 6: Final answer
    x = 110,264.97

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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.