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Finding the Fourth Proportional to 51,806.80, 77,710.20 and 47,832.40

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Solution

The fourth proportional to 51,806.80, 77,710.20 and 47,832.40 is: 71,748.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,806.80 : 77,710.20 = 47,832.40 : x
  2. Step 2: Convert to fraction form
    51,806.80/77,710.20 = 47,832.40/x
  3. Step 3: Cross multiply
    51,806.80x = 77,710.20 × 47,832.40
  4. Step 4: Simplify right side
    51,806.80x = 3,717,065,370.48
  5. Step 5: Solve for x
    x = 3,717,065,370.48/51,806.80
  6. Step 6: Final answer
    x = 71,748.60

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