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Finding the Fourth Proportional to 25,913.76, 38,845.92 and 8,372.64

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Solution

The fourth proportional to 25,913.76, 38,845.92 and 8,372.64 is: 12,550.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,913.76 : 38,845.92 = 8,372.64 : x
  2. Step 2: Convert to fraction form
    25,913.76/38,845.92 = 8,372.64/x
  3. Step 3: Cross multiply
    25,913.76x = 38,845.92 × 8,372.64
  4. Step 4: Simplify right side
    25,913.76x = 325,242,903.63
  5. Step 5: Solve for x
    x = 325,242,903.63/25,913.76
  6. Step 6: Final answer
    x = 12,550.97

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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.