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Finding the Fourth Proportional to 18,848.62, 28,229.86 and 8,994.82

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Solution

The fourth proportional to 18,848.62, 28,229.86 and 8,994.82 is: 13,471.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,848.62 : 28,229.86 = 8,994.82 : x
  2. Step 2: Convert to fraction form
    18,848.62/28,229.86 = 8,994.82/x
  3. Step 3: Cross multiply
    18,848.62x = 28,229.86 × 8,994.82
  4. Step 4: Simplify right side
    18,848.62x = 253,922,509.33
  5. Step 5: Solve for x
    x = 253,922,509.33/18,848.62
  6. Step 6: Final answer
    x = 13,471.68

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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.