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Finding the Fourth Proportional to 99,748.80, 149,623.20 and 93,139.20

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Solution

The fourth proportional to 99,748.80, 149,623.20 and 93,139.20 is: 139,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,748.80 : 149,623.20 = 93,139.20 : x
  2. Step 2: Convert to fraction form
    99,748.80/149,623.20 = 93,139.20/x
  3. Step 3: Cross multiply
    99,748.80x = 149,623.20 × 93,139.20
  4. Step 4: Simplify right side
    99,748.80x = 13,935,785,149.44
  5. Step 5: Solve for x
    x = 13,935,785,149.44/99,748.80
  6. Step 6: Final answer
    x = 139,708.80

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