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Finding the Fourth Proportional to 5,163.96, 7,126.92 and 2,926.20

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Solution

The fourth proportional to 5,163.96, 7,126.92 and 2,926.20 is: 4,038.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.96 : 7,126.92 = 2,926.20 : x
  2. Step 2: Convert to fraction form
    5,163.96/7,126.92 = 2,926.20/x
  3. Step 3: Cross multiply
    5,163.96x = 7,126.92 × 2,926.20
  4. Step 4: Simplify right side
    5,163.96x = 20,854,793.30
  5. Step 5: Solve for x
    x = 20,854,793.30/5,163.96
  6. Step 6: Final answer
    x = 4,038.53

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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.