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Finding the Fourth Proportional to 72,327.72, 108,491.94 and 25,580.64

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Solution

The fourth proportional to 72,327.72, 108,491.94 and 25,580.64 is: 38,371.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,327.72 : 108,491.94 = 25,580.64 : x
  2. Step 2: Convert to fraction form
    72,327.72/108,491.94 = 25,580.64/x
  3. Step 3: Cross multiply
    72,327.72x = 108,491.94 × 25,580.64
  4. Step 4: Simplify right side
    72,327.72x = 2,775,293,260.04
  5. Step 5: Solve for x
    x = 2,775,293,260.04/72,327.72
  6. Step 6: Final answer
    x = 38,371.09

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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.