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Finding the Fourth Proportional to 58,469.57, 80,724.89 and 40,558.31

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Solution

The fourth proportional to 58,469.57, 80,724.89 and 40,558.31 is: 55,996.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,469.57 : 80,724.89 = 40,558.31 : x
  2. Step 2: Convert to fraction form
    58,469.57/80,724.89 = 40,558.31/x
  3. Step 3: Cross multiply
    58,469.57x = 80,724.89 × 40,558.31
  4. Step 4: Simplify right side
    58,469.57x = 3,274,064,811.11
  5. Step 5: Solve for x
    x = 3,274,064,811.11/58,469.57
  6. Step 6: Final answer
    x = 55,996.05

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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.