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Finding the Fourth Proportional to 10,961.70, 16,442.55 and 4,817.70

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Solution

The fourth proportional to 10,961.70, 16,442.55 and 4,817.70 is: 7,226.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.70 : 16,442.55 = 4,817.70 : x
  2. Step 2: Convert to fraction form
    10,961.70/16,442.55 = 4,817.70/x
  3. Step 3: Cross multiply
    10,961.70x = 16,442.55 × 4,817.70
  4. Step 4: Simplify right side
    10,961.70x = 79,215,273.14
  5. Step 5: Solve for x
    x = 79,215,273.14/10,961.70
  6. Step 6: Final answer
    x = 7,226.55

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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.