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Finding the Fourth Proportional to 11,081.70, 16,622.55 and 10,644.30

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Solution

The fourth proportional to 11,081.70, 16,622.55 and 10,644.30 is: 15,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,081.70 : 16,622.55 = 10,644.30 : x
  2. Step 2: Convert to fraction form
    11,081.70/16,622.55 = 10,644.30/x
  3. Step 3: Cross multiply
    11,081.70x = 16,622.55 × 10,644.30
  4. Step 4: Simplify right side
    11,081.70x = 176,935,408.97
  5. Step 5: Solve for x
    x = 176,935,408.97/11,081.70
  6. Step 6: Final answer
    x = 15,966.45

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.