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Finding the Fourth Proportional to 624,615.29, 861,969.38 and 338,135.37

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Solution

The fourth proportional to 624,615.29, 861,969.38 and 338,135.37 is: 466,626.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,615.29 : 861,969.38 = 338,135.37 : x
  2. Step 2: Convert to fraction form
    624,615.29/861,969.38 = 338,135.37/x
  3. Step 3: Cross multiply
    624,615.29x = 861,969.38 × 338,135.37
  4. Step 4: Simplify right side
    624,615.29x = 291,462,335,234.97
  5. Step 5: Solve for x
    x = 291,462,335,234.97/624,615.29
  6. Step 6: Final answer
    x = 466,626.96

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1.5x scale

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.