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Finding the Fourth Proportional to 72,576.90, 108,865.36 and 22,661.27

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Solution

The fourth proportional to 72,576.90, 108,865.36 and 22,661.27 is: 33,991.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,576.90 : 108,865.36 = 22,661.27 : x
  2. Step 2: Convert to fraction form
    72,576.90/108,865.36 = 22,661.27/x
  3. Step 3: Cross multiply
    72,576.90x = 108,865.36 × 22,661.27
  4. Step 4: Simplify right side
    72,576.90x = 2,467,027,532.12
  5. Step 5: Solve for x
    x = 2,467,027,532.12/72,576.90
  6. Step 6: Final answer
    x = 33,991.91

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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.