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Finding the Fourth Proportional to 393,361.81, 542,925.26 and 250,093.87

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Solution

The fourth proportional to 393,361.81, 542,925.26 and 250,093.87 is: 345,184.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,361.81 : 542,925.26 = 250,093.87 : x
  2. Step 2: Convert to fraction form
    393,361.81/542,925.26 = 250,093.87/x
  3. Step 3: Cross multiply
    393,361.81x = 542,925.26 × 250,093.87
  4. Step 4: Simplify right side
    393,361.81x = 135,782,279,394.16
  5. Step 5: Solve for x
    x = 135,782,279,394.16/393,361.81
  6. Step 6: Final answer
    x = 345,184.19

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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.