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Finding the Fourth Proportional to 31,805.92, 47,717.52 and 9,620.02

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Solution

The fourth proportional to 31,805.92, 47,717.52 and 9,620.02 is: 14,432.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,805.92 : 47,717.52 = 9,620.02 : x
  2. Step 2: Convert to fraction form
    31,805.92/47,717.52 = 9,620.02/x
  3. Step 3: Cross multiply
    31,805.92x = 47,717.52 × 9,620.02
  4. Step 4: Simplify right side
    31,805.92x = 459,043,496.75
  5. Step 5: Solve for x
    x = 459,043,496.75/31,805.92
  6. Step 6: Final answer
    x = 14,432.64

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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.