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Finding the Fourth Proportional to 31,826.76, 47,740.41 and 9,641.88

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Solution

The fourth proportional to 31,826.76, 47,740.41 and 9,641.88 is: 14,462.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,826.76 : 47,740.41 = 9,641.88 : x
  2. Step 2: Convert to fraction form
    31,826.76/47,740.41 = 9,641.88/x
  3. Step 3: Cross multiply
    31,826.76x = 47,740.41 × 9,641.88
  4. Step 4: Simplify right side
    31,826.76x = 460,307,304.37
  5. Step 5: Solve for x
    x = 460,307,304.37/31,826.76
  6. Step 6: Final answer
    x = 14,462.90

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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.