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Finding the Fourth Proportional to 43,772.52, 65,679.29 and 21,573.79

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Solution

The fourth proportional to 43,772.52, 65,679.29 and 21,573.79 is: 32,370.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,772.52 : 65,679.29 = 21,573.79 : x
  2. Step 2: Convert to fraction form
    43,772.52/65,679.29 = 21,573.79/x
  3. Step 3: Cross multiply
    43,772.52x = 65,679.29 × 21,573.79
  4. Step 4: Simplify right side
    43,772.52x = 1,416,951,099.55
  5. Step 5: Solve for x
    x = 1,416,951,099.55/43,772.52
  6. Step 6: Final answer
    x = 32,370.79

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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.