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Finding the Fourth Proportional to 624,212.11, 861,139.31 and 365,958.39

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Solution

The fourth proportional to 624,212.11, 861,139.31 and 365,958.39 is: 504,862.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,212.11 : 861,139.31 = 365,958.39 : x
  2. Step 2: Convert to fraction form
    624,212.11/861,139.31 = 365,958.39/x
  3. Step 3: Cross multiply
    624,212.11x = 861,139.31 × 365,958.39
  4. Step 4: Simplify right side
    624,212.11x = 315,141,155,453.31
  5. Step 5: Solve for x
    x = 315,141,155,453.31/624,212.11
  6. Step 6: Final answer
    x = 504,862.29

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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.