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Finding the Fourth Proportional to 31,704.60, 47,553.30 and 8,333.40

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Solution

The fourth proportional to 31,704.60, 47,553.30 and 8,333.40 is: 12,499.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,704.60 : 47,553.30 = 8,333.40 : x
  2. Step 2: Convert to fraction form
    31,704.60/47,553.30 = 8,333.40/x
  3. Step 3: Cross multiply
    31,704.60x = 47,553.30 × 8,333.40
  4. Step 4: Simplify right side
    31,704.60x = 396,280,670.22
  5. Step 5: Solve for x
    x = 396,280,670.22/31,704.60
  6. Step 6: Final answer
    x = 12,499.15

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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.