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Finding the Fourth Proportional to 394,661.06, 544,682.14 and 258,809.30

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Solution

The fourth proportional to 394,661.06, 544,682.14 and 258,809.30 is: 357,189.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,661.06 : 544,682.14 = 258,809.30 : x
  2. Step 2: Convert to fraction form
    394,661.06/544,682.14 = 258,809.30/x
  3. Step 3: Cross multiply
    394,661.06x = 544,682.14 × 258,809.30
  4. Step 4: Simplify right side
    394,661.06x = 140,968,803,375.90
  5. Step 5: Solve for x
    x = 140,968,803,375.90/394,661.06
  6. Step 6: Final answer
    x = 357,189.54

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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.