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Finding the Fourth Proportional to 1,995,586.80, 2,993,380.20 and 1,197,769.20

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Solution

The fourth proportional to 1,995,586.80, 2,993,380.20 and 1,197,769.20 is: 1,796,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995,586.80 : 2,993,380.20 = 1,197,769.20 : x
  2. Step 2: Convert to fraction form
    1,995,586.80/2,993,380.20 = 1,197,769.20/x
  3. Step 3: Cross multiply
    1,995,586.80x = 2,993,380.20 × 1,197,769.20
  4. Step 4: Simplify right side
    1,995,586.80x = 3,585,378,607,449.84
  5. Step 5: Solve for x
    x = 3,585,378,607,449.84/1,995,586.80
  6. Step 6: Final answer
    x = 1,796,653.80

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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.