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Finding the Fourth Proportional to 5,627,974.29, 7,765,745.51 and 3,179,692.03

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Solution

The fourth proportional to 5,627,974.29, 7,765,745.51 and 3,179,692.03 is: 4,387,489.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,627,974.29 : 7,765,745.51 = 3,179,692.03 : x
  2. Step 2: Convert to fraction form
    5,627,974.29/7,765,745.51 = 3,179,692.03/x
  3. Step 3: Cross multiply
    5,627,974.29x = 7,765,745.51 × 3,179,692.03
  4. Step 4: Simplify right side
    5,627,974.29x = 24,692,679,109,991.77
  5. Step 5: Solve for x
    x = 24,692,679,109,991.77/5,627,974.29
  6. Step 6: Final answer
    x = 4,387,489.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.