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Finding the Fourth Proportional to 25,972.62, 38,963.79 and 8,447.46

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Solution

The fourth proportional to 25,972.62, 38,963.79 and 8,447.46 is: 12,672.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,972.62 : 38,963.79 = 8,447.46 : x
  2. Step 2: Convert to fraction form
    25,972.62/38,963.79 = 8,447.46/x
  3. Step 3: Cross multiply
    25,972.62x = 38,963.79 × 8,447.46
  4. Step 4: Simplify right side
    25,972.62x = 329,145,057.47
  5. Step 5: Solve for x
    x = 329,145,057.47/25,972.62
  6. Step 6: Final answer
    x = 12,672.77

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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.