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Finding the Fourth Proportional to 393,361.06, 542,924.22 and 250,093.12

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Solution

The fourth proportional to 393,361.06, 542,924.22 and 250,093.12 is: 345,183.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,361.06 : 542,924.22 = 250,093.12 : x
  2. Step 2: Convert to fraction form
    393,361.06/542,924.22 = 250,093.12/x
  3. Step 3: Cross multiply
    393,361.06x = 542,924.22 × 250,093.12
  4. Step 4: Simplify right side
    393,361.06x = 135,781,612,103.37
  5. Step 5: Solve for x
    x = 135,781,612,103.37/393,361.06
  6. Step 6: Final answer
    x = 345,183.16

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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.