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Finding the Fourth Proportional to 1,961,472.55, 2,942,238.23 and 747,116.03

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Solution

The fourth proportional to 1,961,472.55, 2,942,238.23 and 747,116.03 is: 1,120,685.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961,472.55 : 2,942,238.23 = 747,116.03 : x
  2. Step 2: Convert to fraction form
    1,961,472.55/2,942,238.23 = 747,116.03/x
  3. Step 3: Cross multiply
    1,961,472.55x = 2,942,238.23 × 747,116.03
  4. Step 4: Simplify right side
    1,961,472.55x = 2,198,193,343,858.48
  5. Step 5: Solve for x
    x = 2,198,193,343,858.48/1,961,472.55
  6. Step 6: Final answer
    x = 1,120,685.25

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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.