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Finding the Fourth Proportional to 624,608.36, 861,958.54 and 338,128.37

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Solution

The fourth proportional to 624,608.36, 861,958.54 and 338,128.37 is: 466,616.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,608.36 : 861,958.54 = 338,128.37 : x
  2. Step 2: Convert to fraction form
    624,608.36/861,958.54 = 338,128.37/x
  3. Step 3: Cross multiply
    624,608.36x = 861,958.54 × 338,128.37
  4. Step 4: Simplify right side
    624,608.36x = 291,452,636,137.78
  5. Step 5: Solve for x
    x = 291,452,636,137.78/624,608.36
  6. Step 6: Final answer
    x = 466,616.61

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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.