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Finding the Fourth Proportional to 7,375.50, 11,070.54 and 3,912.75

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Solution

The fourth proportional to 7,375.50, 11,070.54 and 3,912.75 is: 5,872.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,375.50 : 11,070.54 = 3,912.75 : x
  2. Step 2: Convert to fraction form
    7,375.50/11,070.54 = 3,912.75/x
  3. Step 3: Cross multiply
    7,375.50x = 11,070.54 × 3,912.75
  4. Step 4: Simplify right side
    7,375.50x = 43,316,255.39
  5. Step 5: Solve for x
    x = 43,316,255.39/7,375.50
  6. Step 6: Final answer
    x = 5,872.99

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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.