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Finding the Fourth Proportional to 3,519.69, 4,857.07 and 1,986.74

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Solution

The fourth proportional to 3,519.69, 4,857.07 and 1,986.74 is: 2,741.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,519.69 : 4,857.07 = 1,986.74 : x
  2. Step 2: Convert to fraction form
    3,519.69/4,857.07 = 1,986.74/x
  3. Step 3: Cross multiply
    3,519.69x = 4,857.07 × 1,986.74
  4. Step 4: Simplify right side
    3,519.69x = 9,649,760.85
  5. Step 5: Solve for x
    x = 9,649,760.85/3,519.69
  6. Step 6: Final answer
    x = 2,741.65

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1.5x scale

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.