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Finding the Fourth Proportional to 31,905.60, 47,857.03 and 8,532.03

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Solution

The fourth proportional to 31,905.60, 47,857.03 and 8,532.03 is: 12,797.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,905.60 : 47,857.03 = 8,532.03 : x
  2. Step 2: Convert to fraction form
    31,905.60/47,857.03 = 8,532.03/x
  3. Step 3: Cross multiply
    31,905.60x = 47,857.03 × 8,532.03
  4. Step 4: Simplify right side
    31,905.60x = 408,317,773.80
  5. Step 5: Solve for x
    x = 408,317,773.80/31,905.60
  6. Step 6: Final answer
    x = 12,797.69

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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.