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Finding the Fourth Proportional to 2,709.79, 4,063.15 and 1,065.44

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Solution

The fourth proportional to 2,709.79, 4,063.15 and 1,065.44 is: 1,597.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,709.79 : 4,063.15 = 1,065.44 : x
  2. Step 2: Convert to fraction form
    2,709.79/4,063.15 = 1,065.44/x
  3. Step 3: Cross multiply
    2,709.79x = 4,063.15 × 1,065.44
  4. Step 4: Simplify right side
    2,709.79x = 4,329,042.54
  5. Step 5: Solve for x
    x = 4,329,042.54/2,709.79
  6. Step 6: Final answer
    x = 1,597.56

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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.