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Finding the Fourth Proportional to 58,391.92, 80,580.84 and 31,534.43

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Solution

The fourth proportional to 58,391.92, 80,580.84 and 31,534.43 is: 43,517.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,391.92 : 80,580.84 = 31,534.43 : x
  2. Step 2: Convert to fraction form
    58,391.92/80,580.84 = 31,534.43/x
  3. Step 3: Cross multiply
    58,391.92x = 80,580.84 × 31,534.43
  4. Step 4: Simplify right side
    58,391.92x = 2,541,070,858.32
  5. Step 5: Solve for x
    x = 2,541,070,858.32/58,391.92
  6. Step 6: Final answer
    x = 43,517.51

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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.