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Finding the Fourth Proportional to 28,483.75, 42,724.33 and 8,761.45

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Solution

The fourth proportional to 28,483.75, 42,724.33 and 8,761.45 is: 13,141.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,483.75 : 42,724.33 = 8,761.45 : x
  2. Step 2: Convert to fraction form
    28,483.75/42,724.33 = 8,761.45/x
  3. Step 3: Cross multiply
    28,483.75x = 42,724.33 × 8,761.45
  4. Step 4: Simplify right side
    28,483.75x = 374,327,081.08
  5. Step 5: Solve for x
    x = 374,327,081.08/28,483.75
  6. Step 6: Final answer
    x = 13,141.78

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