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Finding the Fourth Proportional to 11,086.90, 16,609.02 and 6,928.54

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Solution

The fourth proportional to 11,086.90, 16,609.02 and 6,928.54 is: 10,379.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,086.90 : 16,609.02 = 6,928.54 : x
  2. Step 2: Convert to fraction form
    11,086.90/16,609.02 = 6,928.54/x
  3. Step 3: Cross multiply
    11,086.90x = 16,609.02 × 6,928.54
  4. Step 4: Simplify right side
    11,086.90x = 115,076,259.43
  5. Step 5: Solve for x
    x = 115,076,259.43/11,086.90
  6. Step 6: Final answer
    x = 10,379.48

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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.