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Finding the Fourth Proportional to 270,626.50, 405,895.66 and 90,791.52

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Solution

The fourth proportional to 270,626.50, 405,895.66 and 90,791.52 is: 136,172.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,626.50 : 405,895.66 = 90,791.52 : x
  2. Step 2: Convert to fraction form
    270,626.50/405,895.66 = 90,791.52/x
  3. Step 3: Cross multiply
    270,626.50x = 405,895.66 × 90,791.52
  4. Step 4: Simplify right side
    270,626.50x = 36,851,883,932.80
  5. Step 5: Solve for x
    x = 36,851,883,932.80/270,626.50
  6. Step 6: Final answer
    x = 136,172.49

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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.