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Finding the Fourth Proportional to 69,619.20, 104,486.40 and 32,236.80

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Solution

The fourth proportional to 69,619.20, 104,486.40 and 32,236.80 is: 48,381.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,619.20 : 104,486.40 = 32,236.80 : x
  2. Step 2: Convert to fraction form
    69,619.20/104,486.40 = 32,236.80/x
  3. Step 3: Cross multiply
    69,619.20x = 104,486.40 × 32,236.80
  4. Step 4: Simplify right side
    69,619.20x = 3,368,307,179.52
  5. Step 5: Solve for x
    x = 3,368,307,179.52/69,619.20
  6. Step 6: Final answer
    x = 48,381.87

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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.