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Finding the Fourth Proportional to 5,270.92, 7,274.46 and 3,175

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Solution

The fourth proportional to 5,270.92, 7,274.46 and 3,175 is: 4,381.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,270.92 : 7,274.46 = 3,175 : x
  2. Step 2: Convert to fraction form
    5,270.92/7,274.46 = 3,175/x
  3. Step 3: Cross multiply
    5,270.92x = 7,274.46 × 3,175
  4. Step 4: Simplify right side
    5,270.92x = 23,096,410.50
  5. Step 5: Solve for x
    x = 23,096,410.50/5,270.92
  6. Step 6: Final answer
    x = 4,381.86

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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.