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Finding the Fourth Proportional to 58,631.40, 80,910.90 and 31,773.96

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Solution

The fourth proportional to 58,631.40, 80,910.90 and 31,773.96 is: 43,847.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,631.40 : 80,910.90 = 31,773.96 : x
  2. Step 2: Convert to fraction form
    58,631.40/80,910.90 = 31,773.96/x
  3. Step 3: Cross multiply
    58,631.40x = 80,910.90 × 31,773.96
  4. Step 4: Simplify right side
    58,631.40x = 2,570,859,700.16
  5. Step 5: Solve for x
    x = 2,570,859,700.16/58,631.40
  6. Step 6: Final answer
    x = 43,847.83

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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.