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Finding the Fourth Proportional to 394,803.54, 544,682.70 and 258,912.90

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Solution

The fourth proportional to 394,803.54, 544,682.70 and 258,912.90 is: 357,203.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,803.54 : 544,682.70 = 258,912.90 : x
  2. Step 2: Convert to fraction form
    394,803.54/544,682.70 = 258,912.90/x
  3. Step 3: Cross multiply
    394,803.54x = 544,682.70 × 258,912.90
  4. Step 4: Simplify right side
    394,803.54x = 141,025,377,436.83
  5. Step 5: Solve for x
    x = 141,025,377,436.83/394,803.54
  6. Step 6: Final answer
    x = 357,203.93

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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.