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Finding the Fourth Proportional to 25,967.44, 38,961.90 and 12,451.76

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Solution

The fourth proportional to 25,967.44, 38,961.90 and 12,451.76 is: 18,682.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,967.44 : 38,961.90 = 12,451.76 : x
  2. Step 2: Convert to fraction form
    25,967.44/38,961.90 = 12,451.76/x
  3. Step 3: Cross multiply
    25,967.44x = 38,961.90 × 12,451.76
  4. Step 4: Simplify right side
    25,967.44x = 485,144,227.94
  5. Step 5: Solve for x
    x = 485,144,227.94/25,967.44
  6. Step 6: Final answer
    x = 18,682.79

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1.5x scale

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.