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Finding the Fourth Proportional to 115,927.40, 173,660.70 and 66,621.80

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Solution

The fourth proportional to 115,927.40, 173,660.70 and 66,621.80 is: 99,800.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,927.40 : 173,660.70 = 66,621.80 : x
  2. Step 2: Convert to fraction form
    115,927.40/173,660.70 = 66,621.80/x
  3. Step 3: Cross multiply
    115,927.40x = 173,660.70 × 66,621.80
  4. Step 4: Simplify right side
    115,927.40x = 11,569,588,423.26
  5. Step 5: Solve for x
    x = 11,569,588,423.26/115,927.40
  6. Step 6: Final answer
    x = 99,800.29

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