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Finding the Fourth Proportional to 352,390.25, 486,298.80 and 191,245.26

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Solution

The fourth proportional to 352,390.25, 486,298.80 and 191,245.26 is: 263,918.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,390.25 : 486,298.80 = 191,245.26 : x
  2. Step 2: Convert to fraction form
    352,390.25/486,298.80 = 191,245.26/x
  3. Step 3: Cross multiply
    352,390.25x = 486,298.80 × 191,245.26
  4. Step 4: Simplify right side
    352,390.25x = 93,002,339,487.46
  5. Step 5: Solve for x
    x = 93,002,339,487.46/352,390.25
  6. Step 6: Final answer
    x = 263,918.59

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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.