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Finding the Fourth Proportional to 7,175.79, 9,906.03 and 4,190.67

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Solution

The fourth proportional to 7,175.79, 9,906.03 and 4,190.67 is: 5,785.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.79 : 9,906.03 = 4,190.67 : x
  2. Step 2: Convert to fraction form
    7,175.79/9,906.03 = 4,190.67/x
  3. Step 3: Cross multiply
    7,175.79x = 9,906.03 × 4,190.67
  4. Step 4: Simplify right side
    7,175.79x = 41,512,902.74
  5. Step 5: Solve for x
    x = 41,512,902.74/7,175.79
  6. Step 6: Final answer
    x = 5,785.13

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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.