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Finding the Fourth Proportional to 2,059.88, 2,843.36 and 1,231.88

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Solution

The fourth proportional to 2,059.88, 2,843.36 and 1,231.88 is: 1,700.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,059.88 : 2,843.36 = 1,231.88 : x
  2. Step 2: Convert to fraction form
    2,059.88/2,843.36 = 1,231.88/x
  3. Step 3: Cross multiply
    2,059.88x = 2,843.36 × 1,231.88
  4. Step 4: Simplify right side
    2,059.88x = 3,502,657.94
  5. Step 5: Solve for x
    x = 3,502,657.94/2,059.88
  6. Step 6: Final answer
    x = 1,700.42

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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.