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Finding the Fourth Proportional to 11,879.73, 16,393.28 and 6,574.55

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Solution

The fourth proportional to 11,879.73, 16,393.28 and 6,574.55 is: 9,072.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.73 : 16,393.28 = 6,574.55 : x
  2. Step 2: Convert to fraction form
    11,879.73/16,393.28 = 6,574.55/x
  3. Step 3: Cross multiply
    11,879.73x = 16,393.28 × 6,574.55
  4. Step 4: Simplify right side
    11,879.73x = 107,778,324.18
  5. Step 5: Solve for x
    x = 107,778,324.18/11,879.73
  6. Step 6: Final answer
    x = 9,072.46

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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.