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Finding the Fourth Proportional to 57,906.72, 79,912.80 and 32,751.36

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Solution

The fourth proportional to 57,906.72, 79,912.80 and 32,751.36 is: 45,197.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,906.72 : 79,912.80 = 32,751.36 : x
  2. Step 2: Convert to fraction form
    57,906.72/79,912.80 = 32,751.36/x
  3. Step 3: Cross multiply
    57,906.72x = 79,912.80 × 32,751.36
  4. Step 4: Simplify right side
    57,906.72x = 2,617,252,881.41
  5. Step 5: Solve for x
    x = 2,617,252,881.41/57,906.72
  6. Step 6: Final answer
    x = 45,197.74

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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.