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Finding the Fourth Proportional to 7,900.94, 11,851.40 and 2,057.39

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Solution

The fourth proportional to 7,900.94, 11,851.40 and 2,057.39 is: 3,086.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.94 : 11,851.40 = 2,057.39 : x
  2. Step 2: Convert to fraction form
    7,900.94/11,851.40 = 2,057.39/x
  3. Step 3: Cross multiply
    7,900.94x = 11,851.40 × 2,057.39
  4. Step 4: Simplify right side
    7,900.94x = 24,382,882.30
  5. Step 5: Solve for x
    x = 24,382,882.30/7,900.94
  6. Step 6: Final answer
    x = 3,086.08

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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.