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Finding the Fourth Proportional to 31,551.60, 47,269.80 and 25,676.40

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Solution

The fourth proportional to 31,551.60, 47,269.80 and 25,676.40 is: 38,467.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,551.60 : 47,269.80 = 25,676.40 : x
  2. Step 2: Convert to fraction form
    31,551.60/47,269.80 = 25,676.40/x
  3. Step 3: Cross multiply
    31,551.60x = 47,269.80 × 25,676.40
  4. Step 4: Simplify right side
    31,551.60x = 1,213,718,292.72
  5. Step 5: Solve for x
    x = 1,213,718,292.72/31,551.60
  6. Step 6: Final answer
    x = 38,467.73

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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.