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Finding the Fourth Proportional to 351,991.44, 485,567.46 and 231,115.14

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Solution

The fourth proportional to 351,991.44, 485,567.46 and 231,115.14 is: 318,820.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,991.44 : 485,567.46 = 231,115.14 : x
  2. Step 2: Convert to fraction form
    351,991.44/485,567.46 = 231,115.14/x
  3. Step 3: Cross multiply
    351,991.44x = 485,567.46 × 231,115.14
  4. Step 4: Simplify right side
    351,991.44x = 112,221,991,497.34
  5. Step 5: Solve for x
    x = 112,221,991,497.34/351,991.44
  6. Step 6: Final answer
    x = 318,820.23

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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.