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Finding the Fourth Proportional to 3,969,848.70, 5,954,773.05 and 3,603,744.90

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Solution

The fourth proportional to 3,969,848.70, 5,954,773.05 and 3,603,744.90 is: 5,405,617.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969,848.70 : 5,954,773.05 = 3,603,744.90 : x
  2. Step 2: Convert to fraction form
    3,969,848.70/5,954,773.05 = 3,603,744.90/x
  3. Step 3: Cross multiply
    3,969,848.70x = 5,954,773.05 × 3,603,744.90
  4. Step 4: Simplify right side
    3,969,848.70x = 21,459,483,009,594.95
  5. Step 5: Solve for x
    x = 21,459,483,009,594.95/3,969,848.70
  6. Step 6: Final answer
    x = 5,405,617.35

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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.