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Finding the Fourth Proportional to 15,992.88, 23,992.20 and 7,231.92

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Solution

The fourth proportional to 15,992.88, 23,992.20 and 7,231.92 is: 10,849.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,992.88 : 23,992.20 = 7,231.92 : x
  2. Step 2: Convert to fraction form
    15,992.88/23,992.20 = 7,231.92/x
  3. Step 3: Cross multiply
    15,992.88x = 23,992.20 × 7,231.92
  4. Step 4: Simplify right side
    15,992.88x = 173,509,671.02
  5. Step 5: Solve for x
    x = 173,509,671.02/15,992.88
  6. Step 6: Final answer
    x = 10,849.18

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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.