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Finding the Fourth Proportional to 1,981,436.12, 2,735,218.84 and 1,337,728.20

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Solution

The fourth proportional to 1,981,436.12, 2,735,218.84 and 1,337,728.20 is: 1,846,630.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,436.12 : 2,735,218.84 = 1,337,728.20 : x
  2. Step 2: Convert to fraction form
    1,981,436.12/2,735,218.84 = 1,337,728.20/x
  3. Step 3: Cross multiply
    1,981,436.12x = 2,735,218.84 × 1,337,728.20
  4. Step 4: Simplify right side
    1,981,436.12x = 3,658,979,375,439.29
  5. Step 5: Solve for x
    x = 3,658,979,375,439.29/1,981,436.12
  6. Step 6: Final answer
    x = 1,846,630.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.