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Finding the Fourth Proportional to 31,968.64, 47,951.22 and 9,782.02

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Solution

The fourth proportional to 31,968.64, 47,951.22 and 9,782.02 is: 14,672.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,968.64 : 47,951.22 = 9,782.02 : x
  2. Step 2: Convert to fraction form
    31,968.64/47,951.22 = 9,782.02/x
  3. Step 3: Cross multiply
    31,968.64x = 47,951.22 × 9,782.02
  4. Step 4: Simplify right side
    31,968.64x = 469,059,793.06
  5. Step 5: Solve for x
    x = 469,059,793.06/31,968.64
  6. Step 6: Final answer
    x = 14,672.50

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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.