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Finding the Fourth Proportional to 58,978.75, 81,389.46 and 32,121.73

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Solution

The fourth proportional to 58,978.75, 81,389.46 and 32,121.73 is: 44,327.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,978.75 : 81,389.46 = 32,121.73 : x
  2. Step 2: Convert to fraction form
    58,978.75/81,389.46 = 32,121.73/x
  3. Step 3: Cross multiply
    58,978.75x = 81,389.46 × 32,121.73
  4. Step 4: Simplify right side
    58,978.75x = 2,614,370,258.97
  5. Step 5: Solve for x
    x = 2,614,370,258.97/58,978.75
  6. Step 6: Final answer
    x = 44,327.33

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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.