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Finding the Fourth Proportional to 11,996.59, 16,555.41 and 6,619.18

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Solution

The fourth proportional to 11,996.59, 16,555.41 and 6,619.18 is: 9,134.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,996.59 : 16,555.41 = 6,619.18 : x
  2. Step 2: Convert to fraction form
    11,996.59/16,555.41 = 6,619.18/x
  3. Step 3: Cross multiply
    11,996.59x = 16,555.41 × 6,619.18
  4. Step 4: Simplify right side
    11,996.59x = 109,583,238.76
  5. Step 5: Solve for x
    x = 109,583,238.76/11,996.59
  6. Step 6: Final answer
    x = 9,134.53

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Double scale
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Similar ratio
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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.