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Finding the Fourth Proportional to 378,136.58, 567,293.10 and 125,398.58

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Solution

The fourth proportional to 378,136.58, 567,293.10 and 125,398.58 is: 188,127.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,136.58 : 567,293.10 = 125,398.58 : x
  2. Step 2: Convert to fraction form
    378,136.58/567,293.10 = 125,398.58/x
  3. Step 3: Cross multiply
    378,136.58x = 567,293.10 × 125,398.58
  4. Step 4: Simplify right side
    378,136.58x = 71,137,749,183.80
  5. Step 5: Solve for x
    x = 71,137,749,183.80/378,136.58
  6. Step 6: Final answer
    x = 188,127.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.