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Finding the Fourth Proportional to 68,359.20, 102,539.04 and 33,268.80

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Solution

The fourth proportional to 68,359.20, 102,539.04 and 33,268.80 is: 49,903.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,359.20 : 102,539.04 = 33,268.80 : x
  2. Step 2: Convert to fraction form
    68,359.20/102,539.04 = 33,268.80/x
  3. Step 3: Cross multiply
    68,359.20x = 102,539.04 × 33,268.80
  4. Step 4: Simplify right side
    68,359.20x = 3,411,350,813.95
  5. Step 5: Solve for x
    x = 3,411,350,813.95/68,359.20
  6. Step 6: Final answer
    x = 49,903.32

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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.