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Finding the Fourth Proportional to 57,912.57, 79,916.63 and 32,757.21

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Solution

The fourth proportional to 57,912.57, 79,916.63 and 32,757.21 is: 45,203.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,912.57 : 79,916.63 = 32,757.21 : x
  2. Step 2: Convert to fraction form
    57,912.57/79,916.63 = 32,757.21/x
  3. Step 3: Cross multiply
    57,912.57x = 79,916.63 × 32,757.21
  4. Step 4: Simplify right side
    57,912.57x = 2,617,845,667.62
  5. Step 5: Solve for x
    x = 2,617,845,667.62/57,912.57
  6. Step 6: Final answer
    x = 45,203.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.