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Finding the Fourth Proportional to 204,648.94, 307,041.73 and 90,781.04

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Solution

The fourth proportional to 204,648.94, 307,041.73 and 90,781.04 is: 136,201.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,648.94 : 307,041.73 = 90,781.04 : x
  2. Step 2: Convert to fraction form
    204,648.94/307,041.73 = 90,781.04/x
  3. Step 3: Cross multiply
    204,648.94x = 307,041.73 × 90,781.04
  4. Step 4: Simplify right side
    204,648.94x = 27,873,567,572.80
  5. Step 5: Solve for x
    x = 27,873,567,572.80/204,648.94
  6. Step 6: Final answer
    x = 136,201.87

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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.