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Finding the Fourth Proportional to 25,691.12, 38,538 and 7,224.56

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Solution

The fourth proportional to 25,691.12, 38,538 and 7,224.56 is: 10,837.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,691.12 : 38,538 = 7,224.56 : x
  2. Step 2: Convert to fraction form
    25,691.12/38,538 = 7,224.56/x
  3. Step 3: Cross multiply
    25,691.12x = 38,538 × 7,224.56
  4. Step 4: Simplify right side
    25,691.12x = 278,420,093.28
  5. Step 5: Solve for x
    x = 278,420,093.28/25,691.12
  6. Step 6: Final answer
    x = 10,837.21

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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.