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Finding the Fourth Proportional to 111,791.88, 154,220.96 and 66,444.44

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Solution

The fourth proportional to 111,791.88, 154,220.96 and 66,444.44 is: 91,662.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,791.88 : 154,220.96 = 66,444.44 : x
  2. Step 2: Convert to fraction form
    111,791.88/154,220.96 = 66,444.44/x
  3. Step 3: Cross multiply
    111,791.88x = 154,220.96 × 66,444.44
  4. Step 4: Simplify right side
    111,791.88x = 10,247,124,718.47
  5. Step 5: Solve for x
    x = 10,247,124,718.47/111,791.88
  6. Step 6: Final answer
    x = 91,662.51

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1.5x scale

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.