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Finding the Fourth Proportional to 3,836,687.80, 5,751,065.94 and 1,438,841.56

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Solution

The fourth proportional to 3,836,687.80, 5,751,065.94 and 1,438,841.56 is: 2,156,775.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,836,687.80 : 5,751,065.94 = 1,438,841.56 : x
  2. Step 2: Convert to fraction form
    3,836,687.80/5,751,065.94 = 1,438,841.56/x
  3. Step 3: Cross multiply
    3,836,687.80x = 5,751,065.94 × 1,438,841.56
  4. Step 4: Simplify right side
    3,836,687.80x = 8,274,872,688,772.47
  5. Step 5: Solve for x
    x = 8,274,872,688,772.47/3,836,687.80
  6. Step 6: Final answer
    x = 2,156,775.09

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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.