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Finding the Fourth Proportional to 18,995,872.92, 28,493,409.78 and 4,619,014.44

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Solution

The fourth proportional to 18,995,872.92, 28,493,409.78 and 4,619,014.44 is: 6,928,424.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,995,872.92 : 28,493,409.78 = 4,619,014.44 : x
  2. Step 2: Convert to fraction form
    18,995,872.92/28,493,409.78 = 4,619,014.44/x
  3. Step 3: Cross multiply
    18,995,872.92x = 28,493,409.78 × 4,619,014.44
  4. Step 4: Simplify right side
    18,995,872.92x = 131,611,471,218,657.23
  5. Step 5: Solve for x
    x = 131,611,471,218,657.23/18,995,872.92
  6. Step 6: Final answer
    x = 6,928,424.49

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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.