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Finding the Fourth Proportional to 442,794.15, 664,083.23 and 127,218.15

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Solution

The fourth proportional to 442,794.15, 664,083.23 and 127,218.15 is: 190,796.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,794.15 : 664,083.23 = 127,218.15 : x
  2. Step 2: Convert to fraction form
    442,794.15/664,083.23 = 127,218.15/x
  3. Step 3: Cross multiply
    442,794.15x = 664,083.23 × 127,218.15
  4. Step 4: Simplify right side
    442,794.15x = 84,483,439,330.53
  5. Step 5: Solve for x
    x = 84,483,439,330.53/442,794.15
  6. Step 6: Final answer
    x = 190,796.20

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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.