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Finding the Fourth Proportional to 69,193.32, 103,752.86 and 21,799.56

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Solution

The fourth proportional to 69,193.32, 103,752.86 and 21,799.56 is: 32,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,193.32 : 103,752.86 = 21,799.56 : x
  2. Step 2: Convert to fraction form
    69,193.32/103,752.86 = 21,799.56/x
  3. Step 3: Cross multiply
    69,193.32x = 103,752.86 × 21,799.56
  4. Step 4: Simplify right side
    69,193.32x = 2,261,766,696.74
  5. Step 5: Solve for x
    x = 2,261,766,696.74/69,193.32
  6. Step 6: Final answer
    x = 32,687.65

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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.