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Finding the Fourth Proportional to 15,027.86, 20,739.99 and 8,654.66

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Solution

The fourth proportional to 15,027.86, 20,739.99 and 8,654.66 is: 11,944.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.86 : 20,739.99 = 8,654.66 : x
  2. Step 2: Convert to fraction form
    15,027.86/20,739.99 = 8,654.66/x
  3. Step 3: Cross multiply
    15,027.86x = 20,739.99 × 8,654.66
  4. Step 4: Simplify right side
    15,027.86x = 179,497,458.15
  5. Step 5: Solve for x
    x = 179,497,458.15/15,027.86
  6. Step 6: Final answer
    x = 11,944.32

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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.