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Finding the Fourth Proportional to 1,961,942.96, 2,943,661.80 and 682,692.68

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Solution

The fourth proportional to 1,961,942.96, 2,943,661.80 and 682,692.68 is: 1,024,299.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961,942.96 : 2,943,661.80 = 682,692.68 : x
  2. Step 2: Convert to fraction form
    1,961,942.96/2,943,661.80 = 682,692.68/x
  3. Step 3: Cross multiply
    1,961,942.96x = 2,943,661.80 × 682,692.68
  4. Step 4: Simplify right side
    1,961,942.96x = 2,009,616,363,255.62
  5. Step 5: Solve for x
    x = 2,009,616,363,255.62/1,961,942.96
  6. Step 6: Final answer
    x = 1,024,299.08

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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.