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Finding the Fourth Proportional to 58,796.42, 81,138.29 and 31,939.79

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Solution

The fourth proportional to 58,796.42, 81,138.29 and 31,939.79 is: 44,076.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,796.42 : 81,138.29 = 31,939.79 : x
  2. Step 2: Convert to fraction form
    58,796.42/81,138.29 = 31,939.79/x
  3. Step 3: Cross multiply
    58,796.42x = 81,138.29 × 31,939.79
  4. Step 4: Simplify right side
    58,796.42x = 2,591,540,226.25
  5. Step 5: Solve for x
    x = 2,591,540,226.25/58,796.42
  6. Step 6: Final answer
    x = 44,076.50

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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.