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Finding the Fourth Proportional to 1,941,576.39, 2,912,784.99 and 743,498.76

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Solution

The fourth proportional to 1,941,576.39, 2,912,784.99 and 743,498.76 is: 1,115,409.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941,576.39 : 2,912,784.99 = 743,498.76 : x
  2. Step 2: Convert to fraction form
    1,941,576.39/2,912,784.99 = 743,498.76/x
  3. Step 3: Cross multiply
    1,941,576.39x = 2,912,784.99 × 743,498.76
  4. Step 4: Simplify right side
    1,941,576.39x = 2,165,652,028,211.61
  5. Step 5: Solve for x
    x = 2,165,652,028,211.61/1,941,576.39
  6. Step 6: Final answer
    x = 1,115,409.13

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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.