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Finding the Fourth Proportional to 2,889.55, 3,986.50 and 1,895.38

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Solution

The fourth proportional to 2,889.55, 3,986.50 and 1,895.38 is: 2,614.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.55 : 3,986.50 = 1,895.38 : x
  2. Step 2: Convert to fraction form
    2,889.55/3,986.50 = 1,895.38/x
  3. Step 3: Cross multiply
    2,889.55x = 3,986.50 × 1,895.38
  4. Step 4: Simplify right side
    2,889.55x = 7,555,932.37
  5. Step 5: Solve for x
    x = 7,555,932.37/2,889.55
  6. Step 6: Final answer
    x = 2,614.92

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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.