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Finding the Fourth Proportional to 61,506.20, 92,129.70 and 51,138.20

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Solution

The fourth proportional to 61,506.20, 92,129.70 and 51,138.20 is: 76,599.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,506.20 : 92,129.70 = 51,138.20 : x
  2. Step 2: Convert to fraction form
    61,506.20/92,129.70 = 51,138.20/x
  3. Step 3: Cross multiply
    61,506.20x = 92,129.70 × 51,138.20
  4. Step 4: Simplify right side
    61,506.20x = 4,711,347,024.54
  5. Step 5: Solve for x
    x = 4,711,347,024.54/61,506.20
  6. Step 6: Final answer
    x = 76,599.55

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