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Finding the Fourth Proportional to 104,641.28, 156,986.52 and 34,520.60

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Solution

The fourth proportional to 104,641.28, 156,986.52 and 34,520.60 is: 51,789.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,641.28 : 156,986.52 = 34,520.60 : x
  2. Step 2: Convert to fraction form
    104,641.28/156,986.52 = 34,520.60/x
  3. Step 3: Cross multiply
    104,641.28x = 156,986.52 × 34,520.60
  4. Step 4: Simplify right side
    104,641.28x = 5,419,268,862.31
  5. Step 5: Solve for x
    x = 5,419,268,862.31/104,641.28
  6. Step 6: Final answer
    x = 51,789.02

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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.