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Finding the Fourth Proportional to 73,059.60, 109,370.70 and 68,734.20

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Solution

The fourth proportional to 73,059.60, 109,370.70 and 68,734.20 is: 102,895.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,059.60 : 109,370.70 = 68,734.20 : x
  2. Step 2: Convert to fraction form
    73,059.60/109,370.70 = 68,734.20/x
  3. Step 3: Cross multiply
    73,059.60x = 109,370.70 × 68,734.20
  4. Step 4: Simplify right side
    73,059.60x = 7,517,507,567.94
  5. Step 5: Solve for x
    x = 7,517,507,567.94/73,059.60
  6. Step 6: Final answer
    x = 102,895.55

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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.