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Finding the Fourth Proportional to 128,092.58, 192,183.36 and 57,065.64

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Solution

The fourth proportional to 128,092.58, 192,183.36 and 57,065.64 is: 85,618.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,092.58 : 192,183.36 = 57,065.64 : x
  2. Step 2: Convert to fraction form
    128,092.58/192,183.36 = 57,065.64/x
  3. Step 3: Cross multiply
    128,092.58x = 192,183.36 × 57,065.64
  4. Step 4: Simplify right side
    128,092.58x = 10,967,066,435.75
  5. Step 5: Solve for x
    x = 10,967,066,435.75/128,092.58
  6. Step 6: Final answer
    x = 85,618.28

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1.5x scale

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.