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Finding the Fourth Proportional to 58,817.75, 81,169.70 and 31,961.99

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Solution

The fourth proportional to 58,817.75, 81,169.70 and 31,961.99 is: 44,108.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,817.75 : 81,169.70 = 31,961.99 : x
  2. Step 2: Convert to fraction form
    58,817.75/81,169.70 = 31,961.99/x
  3. Step 3: Cross multiply
    58,817.75x = 81,169.70 × 31,961.99
  4. Step 4: Simplify right side
    58,817.75x = 2,594,345,182.82
  5. Step 5: Solve for x
    x = 2,594,345,182.82/58,817.75
  6. Step 6: Final answer
    x = 44,108.21

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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.