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Finding the Fourth Proportional to 394,805.54, 544,685.46 and 258,914.90

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Solution

The fourth proportional to 394,805.54, 544,685.46 and 258,914.90 is: 357,206.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,805.54 : 544,685.46 = 258,914.90 : x
  2. Step 2: Convert to fraction form
    394,805.54/544,685.46 = 258,914.90/x
  3. Step 3: Cross multiply
    394,805.54x = 544,685.46 × 258,914.90
  4. Step 4: Simplify right side
    394,805.54x = 141,027,181,407.35
  5. Step 5: Solve for x
    x = 141,027,181,407.35/394,805.54
  6. Step 6: Final answer
    x = 357,206.69

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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.