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Finding the Fourth Proportional to 72,213.93, 108,339.39 and 27,828.77

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Solution

The fourth proportional to 72,213.93, 108,339.39 and 27,828.77 is: 41,750.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,213.93 : 108,339.39 = 27,828.77 : x
  2. Step 2: Convert to fraction form
    72,213.93/108,339.39 = 27,828.77/x
  3. Step 3: Cross multiply
    72,213.93x = 108,339.39 × 27,828.77
  4. Step 4: Simplify right side
    72,213.93x = 3,014,951,424.55
  5. Step 5: Solve for x
    x = 3,014,951,424.55/72,213.93
  6. Step 6: Final answer
    x = 41,750.27

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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.