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Finding the Fourth Proportional to 51,812.40, 77,621.40 and 48,313.20

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Solution

The fourth proportional to 51,812.40, 77,621.40 and 48,313.20 is: 72,379.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,812.40 : 77,621.40 = 48,313.20 : x
  2. Step 2: Convert to fraction form
    51,812.40/77,621.40 = 48,313.20/x
  3. Step 3: Cross multiply
    51,812.40x = 77,621.40 × 48,313.20
  4. Step 4: Simplify right side
    51,812.40x = 3,750,138,222.48
  5. Step 5: Solve for x
    x = 3,750,138,222.48/51,812.40
  6. Step 6: Final answer
    x = 72,379.16

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