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Finding the Fourth Proportional to 58,731.80, 81,050.48 and 31,874.54

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Solution

The fourth proportional to 58,731.80, 81,050.48 and 31,874.54 is: 43,987.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,731.80 : 81,050.48 = 31,874.54 : x
  2. Step 2: Convert to fraction form
    58,731.80/81,050.48 = 31,874.54/x
  3. Step 3: Cross multiply
    58,731.80x = 81,050.48 × 31,874.54
  4. Step 4: Simplify right side
    58,731.80x = 2,583,446,766.78
  5. Step 5: Solve for x
    x = 2,583,446,766.78/58,731.80
  6. Step 6: Final answer
    x = 43,987.19

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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.