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Finding the Fourth Proportional to 5,315,231.70, 7,972,847.55 and 3,068,745.30

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Solution

The fourth proportional to 5,315,231.70, 7,972,847.55 and 3,068,745.30 is: 4,603,117.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315,231.70 : 7,972,847.55 = 3,068,745.30 : x
  2. Step 2: Convert to fraction form
    5,315,231.70/7,972,847.55 = 3,068,745.30/x
  3. Step 3: Cross multiply
    5,315,231.70x = 7,972,847.55 × 3,068,745.30
  4. Step 4: Simplify right side
    5,315,231.70x = 24,466,638,446,679.01
  5. Step 5: Solve for x
    x = 24,466,638,446,679.01/5,315,231.70
  6. Step 6: Final answer
    x = 4,603,117.95

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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.