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Finding the Fourth Proportional to 25,474.41, 38,211.63 and 7,944.21

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Solution

The fourth proportional to 25,474.41, 38,211.63 and 7,944.21 is: 11,916.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,474.41 : 38,211.63 = 7,944.21 : x
  2. Step 2: Convert to fraction form
    25,474.41/38,211.63 = 7,944.21/x
  3. Step 3: Cross multiply
    25,474.41x = 38,211.63 × 7,944.21
  4. Step 4: Simplify right side
    25,474.41x = 303,561,213.16
  5. Step 5: Solve for x
    x = 303,561,213.16/25,474.41
  6. Step 6: Final answer
    x = 11,916.32

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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.