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Finding the Fourth Proportional to 611,871.33, 844,383.42 and 339,939.54

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Solution

The fourth proportional to 611,871.33, 844,383.42 and 339,939.54 is: 469,117.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,871.33 : 844,383.42 = 339,939.54 : x
  2. Step 2: Convert to fraction form
    611,871.33/844,383.42 = 339,939.54/x
  3. Step 3: Cross multiply
    611,871.33x = 844,383.42 × 339,939.54
  4. Step 4: Simplify right side
    611,871.33x = 287,039,311,378.43
  5. Step 5: Solve for x
    x = 287,039,311,378.43/611,871.33
  6. Step 6: Final answer
    x = 469,117.11

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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.