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Finding the Fourth Proportional to 25,479.74, 38,202.15 and 12,975.56

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Solution

The fourth proportional to 25,479.74, 38,202.15 and 12,975.56 is: 19,454.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,479.74 : 38,202.15 = 12,975.56 : x
  2. Step 2: Convert to fraction form
    25,479.74/38,202.15 = 12,975.56/x
  3. Step 3: Cross multiply
    25,479.74x = 38,202.15 × 12,975.56
  4. Step 4: Simplify right side
    25,479.74x = 495,694,098.44
  5. Step 5: Solve for x
    x = 495,694,098.44/25,479.74
  6. Step 6: Final answer
    x = 19,454.44

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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.