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Finding the Fourth Proportional to 110,959.40, 166,439.10 and 66,563.30

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Solution

The fourth proportional to 110,959.40, 166,439.10 and 66,563.30 is: 99,844.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,959.40 : 166,439.10 = 66,563.30 : x
  2. Step 2: Convert to fraction form
    110,959.40/166,439.10 = 66,563.30/x
  3. Step 3: Cross multiply
    110,959.40x = 166,439.10 × 66,563.30
  4. Step 4: Simplify right side
    110,959.40x = 11,078,735,745.03
  5. Step 5: Solve for x
    x = 11,078,735,745.03/110,959.40
  6. Step 6: Final answer
    x = 99,844.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.