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Finding the Fourth Proportional to 39,805.62, 59,687.88 and 11,722.02

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Solution

The fourth proportional to 39,805.62, 59,687.88 and 11,722.02 is: 17,576.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,805.62 : 59,687.88 = 11,722.02 : x
  2. Step 2: Convert to fraction form
    39,805.62/59,687.88 = 11,722.02/x
  3. Step 3: Cross multiply
    39,805.62x = 59,687.88 × 11,722.02
  4. Step 4: Simplify right side
    39,805.62x = 699,662,523.12
  5. Step 5: Solve for x
    x = 699,662,523.12/39,805.62
  6. Step 6: Final answer
    x = 17,576.98

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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.