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Finding the Fourth Proportional to 28,507.94, 42,761.93 and 7,731.44

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Solution

The fourth proportional to 28,507.94, 42,761.93 and 7,731.44 is: 11,597.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.94 : 42,761.93 = 7,731.44 : x
  2. Step 2: Convert to fraction form
    28,507.94/42,761.93 = 7,731.44/x
  3. Step 3: Cross multiply
    28,507.94x = 42,761.93 × 7,731.44
  4. Step 4: Simplify right side
    28,507.94x = 330,611,043.61
  5. Step 5: Solve for x
    x = 330,611,043.61/28,507.94
  6. Step 6: Final answer
    x = 11,597.16

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