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Finding the Fourth Proportional to 3,593.16, 4,959 and 2,021.40

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Solution

The fourth proportional to 3,593.16, 4,959 and 2,021.40 is: 2,789.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,593.16 : 4,959 = 2,021.40 : x
  2. Step 2: Convert to fraction form
    3,593.16/4,959 = 2,021.40/x
  3. Step 3: Cross multiply
    3,593.16x = 4,959 × 2,021.40
  4. Step 4: Simplify right side
    3,593.16x = 10,024,122.60
  5. Step 5: Solve for x
    x = 10,024,122.60/3,593.16
  6. Step 6: Final answer
    x = 2,789.78

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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.