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Finding the Fourth Proportional to 57,402.56, 79,213.99 and 31,908.29

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Solution

The fourth proportional to 57,402.56, 79,213.99 and 31,908.29 is: 44,032.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,402.56 : 79,213.99 = 31,908.29 : x
  2. Step 2: Convert to fraction form
    57,402.56/79,213.99 = 31,908.29/x
  3. Step 3: Cross multiply
    57,402.56x = 79,213.99 × 31,908.29
  4. Step 4: Simplify right side
    57,402.56x = 2,527,582,964.98
  5. Step 5: Solve for x
    x = 2,527,582,964.98/57,402.56
  6. Step 6: Final answer
    x = 44,032.58

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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.