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Finding the Fourth Proportional to 3,855,796.79, 5,749,223.30 and 3,749,861.49

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Solution

The fourth proportional to 3,855,796.79, 5,749,223.30 and 3,749,861.49 is: 5,591,267.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855,796.79 : 5,749,223.30 = 3,749,861.49 : x
  2. Step 2: Convert to fraction form
    3,855,796.79/5,749,223.30 = 3,749,861.49/x
  3. Step 3: Cross multiply
    3,855,796.79x = 5,749,223.30 × 3,749,861.49
  4. Step 4: Simplify right side
    3,855,796.79x = 21,558,791,031,331.41
  5. Step 5: Solve for x
    x = 21,558,791,031,331.41/3,855,796.79
  6. Step 6: Final answer
    x = 5,591,267.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.