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Finding the Fourth Proportional to 18,995,873.92, 28,493,411.28 and 4,619,015.44

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Solution

The fourth proportional to 18,995,873.92, 28,493,411.28 and 4,619,015.44 is: 6,928,425.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,995,873.92 : 28,493,411.28 = 4,619,015.44 : x
  2. Step 2: Convert to fraction form
    18,995,873.92/28,493,411.28 = 4,619,015.44/x
  3. Step 3: Cross multiply
    18,995,873.92x = 28,493,411.28 × 4,619,015.44
  4. Step 4: Simplify right side
    18,995,873.92x = 131,611,506,640,590.19
  5. Step 5: Solve for x
    x = 131,611,506,640,590.19/18,995,873.92
  6. Step 6: Final answer
    x = 6,928,425.99

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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.