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Finding the Fourth Proportional to 73,235.40, 109,853.10 and 72,457.80

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Solution

The fourth proportional to 73,235.40, 109,853.10 and 72,457.80 is: 108,686.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,235.40 : 109,853.10 = 72,457.80 : x
  2. Step 2: Convert to fraction form
    73,235.40/109,853.10 = 72,457.80/x
  3. Step 3: Cross multiply
    73,235.40x = 109,853.10 × 72,457.80
  4. Step 4: Simplify right side
    73,235.40x = 7,959,713,949.18
  5. Step 5: Solve for x
    x = 7,959,713,949.18/73,235.40
  6. Step 6: Final answer
    x = 108,686.70

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