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Finding the Fourth Proportional to 1,941,581.92, 2,912,793.29 and 743,504.29

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Solution

The fourth proportional to 1,941,581.92, 2,912,793.29 and 743,504.29 is: 1,115,417.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941,581.92 : 2,912,793.29 = 743,504.29 : x
  2. Step 2: Convert to fraction form
    1,941,581.92/2,912,793.29 = 743,504.29/x
  3. Step 3: Cross multiply
    1,941,581.92x = 2,912,793.29 × 743,504.29
  4. Step 4: Simplify right side
    1,941,581.92x = 2,165,674,306,998.21
  5. Step 5: Solve for x
    x = 2,165,674,306,998.21/1,941,581.92
  6. Step 6: Final answer
    x = 1,115,417.43

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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.