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Finding the Fourth Proportional to 11,879.55, 16,394.18 and 6,574.86

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Solution

The fourth proportional to 11,879.55, 16,394.18 and 6,574.86 is: 9,073.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.55 : 16,394.18 = 6,574.86 : x
  2. Step 2: Convert to fraction form
    11,879.55/16,394.18 = 6,574.86/x
  3. Step 3: Cross multiply
    11,879.55x = 16,394.18 × 6,574.86
  4. Step 4: Simplify right side
    11,879.55x = 107,789,405.44
  5. Step 5: Solve for x
    x = 107,789,405.44/11,879.55
  6. Step 6: Final answer
    x = 9,073.53

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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.