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Finding the Fourth Proportional to 5,213.57, 7,820.15 and 1,926.59

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Solution

The fourth proportional to 5,213.57, 7,820.15 and 1,926.59 is: 2,889.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.57 : 7,820.15 = 1,926.59 : x
  2. Step 2: Convert to fraction form
    5,213.57/7,820.15 = 1,926.59/x
  3. Step 3: Cross multiply
    5,213.57x = 7,820.15 × 1,926.59
  4. Step 4: Simplify right side
    5,213.57x = 15,066,174.05
  5. Step 5: Solve for x
    x = 15,066,174.05/5,213.57
  6. Step 6: Final answer
    x = 2,889.80

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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.