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Finding the Fourth Proportional to 68,554.60, 102,839.46 and 21,796.54

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Solution

The fourth proportional to 68,554.60, 102,839.46 and 21,796.54 is: 32,697.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,554.60 : 102,839.46 = 21,796.54 : x
  2. Step 2: Convert to fraction form
    68,554.60/102,839.46 = 21,796.54/x
  3. Step 3: Cross multiply
    68,554.60x = 102,839.46 × 21,796.54
  4. Step 4: Simplify right side
    68,554.60x = 2,241,544,403.47
  5. Step 5: Solve for x
    x = 2,241,544,403.47/68,554.60
  6. Step 6: Final answer
    x = 32,697.21

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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.