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Finding the Fourth Proportional to 7,937.69, 11,912.01 and 3,560.05

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Solution

The fourth proportional to 7,937.69, 11,912.01 and 3,560.05 is: 5,342.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,937.69 : 11,912.01 = 3,560.05 : x
  2. Step 2: Convert to fraction form
    7,937.69/11,912.01 = 3,560.05/x
  3. Step 3: Cross multiply
    7,937.69x = 11,912.01 × 3,560.05
  4. Step 4: Simplify right side
    7,937.69x = 42,407,321.42
  5. Step 5: Solve for x
    x = 42,407,321.42/7,937.69
  6. Step 6: Final answer
    x = 5,342.53

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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.