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Finding the Fourth Proportional to 81,717.78, 122,573.34 and 22,551.93

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Solution

The fourth proportional to 81,717.78, 122,573.34 and 22,551.93 is: 33,826.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,717.78 : 122,573.34 = 22,551.93 : x
  2. Step 2: Convert to fraction form
    81,717.78/122,573.34 = 22,551.93/x
  3. Step 3: Cross multiply
    81,717.78x = 122,573.34 × 22,551.93
  4. Step 4: Simplify right side
    81,717.78x = 2,764,265,383.55
  5. Step 5: Solve for x
    x = 2,764,265,383.55/81,717.78
  6. Step 6: Final answer
    x = 33,826.98

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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.