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Finding the Fourth Proportional to 20,473.92, 28,251.72 and 11,524.50

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Solution

The fourth proportional to 20,473.92, 28,251.72 and 11,524.50 is: 15,902.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.92 : 28,251.72 = 11,524.50 : x
  2. Step 2: Convert to fraction form
    20,473.92/28,251.72 = 11,524.50/x
  3. Step 3: Cross multiply
    20,473.92x = 28,251.72 × 11,524.50
  4. Step 4: Simplify right side
    20,473.92x = 325,586,947.14
  5. Step 5: Solve for x
    x = 325,586,947.14/20,473.92
  6. Step 6: Final answer
    x = 15,902.52

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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.