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Finding the Fourth Proportional to 371,740.80, 557,611.20 and 135,091.20

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Solution

The fourth proportional to 371,740.80, 557,611.20 and 135,091.20 is: 202,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,740.80 : 557,611.20 = 135,091.20 : x
  2. Step 2: Convert to fraction form
    371,740.80/557,611.20 = 135,091.20/x
  3. Step 3: Cross multiply
    371,740.80x = 557,611.20 × 135,091.20
  4. Step 4: Simplify right side
    371,740.80x = 75,328,366,141.44
  5. Step 5: Solve for x
    x = 75,328,366,141.44/371,740.80
  6. Step 6: Final answer
    x = 202,636.80

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