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Finding the Fourth Proportional to 352,672.44, 486,836.90 and 238,106.28

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Solution

The fourth proportional to 352,672.44, 486,836.90 and 238,106.28 is: 328,687.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,672.44 : 486,836.90 = 238,106.28 : x
  2. Step 2: Convert to fraction form
    352,672.44/486,836.90 = 238,106.28/x
  3. Step 3: Cross multiply
    352,672.44x = 486,836.90 × 238,106.28
  4. Step 4: Simplify right side
    352,672.44x = 115,918,919,601.02
  5. Step 5: Solve for x
    x = 115,918,919,601.02/352,672.44
  6. Step 6: Final answer
    x = 328,687.21

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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.