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Finding the Fourth Proportional to 7,159.37, 9,879.39 and 4,174.83

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Solution

The fourth proportional to 7,159.37, 9,879.39 and 4,174.83 is: 5,760.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.37 : 9,879.39 = 4,174.83 : x
  2. Step 2: Convert to fraction form
    7,159.37/9,879.39 = 4,174.83/x
  3. Step 3: Cross multiply
    7,159.37x = 9,879.39 × 4,174.83
  4. Step 4: Simplify right side
    7,159.37x = 41,244,773.75
  5. Step 5: Solve for x
    x = 41,244,773.75/7,159.37
  6. Step 6: Final answer
    x = 5,760.95

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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.