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Finding the Fourth Proportional to 28,251.96, 38,872.56 and 25,919.16

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Solution

The fourth proportional to 28,251.96, 38,872.56 and 25,919.16 is: 35,662.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.96 : 38,872.56 = 25,919.16 : x
  2. Step 2: Convert to fraction form
    28,251.96/38,872.56 = 25,919.16/x
  3. Step 3: Cross multiply
    28,251.96x = 38,872.56 × 25,919.16
  4. Step 4: Simplify right side
    28,251.96x = 1,007,544,102.25
  5. Step 5: Solve for x
    x = 1,007,544,102.25/28,251.96
  6. Step 6: Final answer
    x = 35,662.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.