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Finding the Fourth Proportional to 57,398.91, 79,209.96 and 31,904.61

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Solution

The fourth proportional to 57,398.91, 79,209.96 and 31,904.61 is: 44,028.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,398.91 : 79,209.96 = 31,904.61 : x
  2. Step 2: Convert to fraction form
    57,398.91/79,209.96 = 31,904.61/x
  3. Step 3: Cross multiply
    57,398.91x = 79,209.96 × 31,904.61
  4. Step 4: Simplify right side
    57,398.91x = 2,527,162,881.92
  5. Step 5: Solve for x
    x = 2,527,162,881.92/57,398.91
  6. Step 6: Final answer
    x = 44,028.06

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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.