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Finding the Fourth Proportional to 1,961,998.76, 2,943,745.34 and 682,748.36

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Solution

The fourth proportional to 1,961,998.76, 2,943,745.34 and 682,748.36 is: 1,024,382.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961,998.76 : 2,943,745.34 = 682,748.36 : x
  2. Step 2: Convert to fraction form
    1,961,998.76/2,943,745.34 = 682,748.36/x
  3. Step 3: Cross multiply
    1,961,998.76x = 2,943,745.34 × 682,748.36
  4. Step 4: Simplify right side
    1,961,998.76x = 2,009,837,303,142.64
  5. Step 5: Solve for x
    x = 2,009,837,303,142.64/1,961,998.76
  6. Step 6: Final answer
    x = 1,024,382.56

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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.