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Finding the Fourth Proportional to 72,246.20, 108,369.30 and 44,252.60

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Solution

The fourth proportional to 72,246.20, 108,369.30 and 44,252.60 is: 66,378.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,246.20 : 108,369.30 = 44,252.60 : x
  2. Step 2: Convert to fraction form
    72,246.20/108,369.30 = 44,252.60/x
  3. Step 3: Cross multiply
    72,246.20x = 108,369.30 × 44,252.60
  4. Step 4: Simplify right side
    72,246.20x = 4,795,623,285.18
  5. Step 5: Solve for x
    x = 4,795,623,285.18/72,246.20
  6. Step 6: Final answer
    x = 66,378.90

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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.