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Finding the Fourth Proportional to 57,374.99, 79,175.44 and 31,881.05

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Solution

The fourth proportional to 57,374.99, 79,175.44 and 31,881.05 is: 43,994.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,374.99 : 79,175.44 = 31,881.05 : x
  2. Step 2: Convert to fraction form
    57,374.99/79,175.44 = 31,881.05/x
  3. Step 3: Cross multiply
    57,374.99x = 79,175.44 × 31,881.05
  4. Step 4: Simplify right side
    57,374.99x = 2,524,196,161.41
  5. Step 5: Solve for x
    x = 2,524,196,161.41/57,374.99
  6. Step 6: Final answer
    x = 43,994.71

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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.