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Finding the Fourth Proportional to 4,991.27, 7,486.92 and 1,293.24

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Solution

The fourth proportional to 4,991.27, 7,486.92 and 1,293.24 is: 1,939.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.27 : 7,486.92 = 1,293.24 : x
  2. Step 2: Convert to fraction form
    4,991.27/7,486.92 = 1,293.24/x
  3. Step 3: Cross multiply
    4,991.27x = 7,486.92 × 1,293.24
  4. Step 4: Simplify right side
    4,991.27x = 9,682,384.42
  5. Step 5: Solve for x
    x = 9,682,384.42/4,991.27
  6. Step 6: Final answer
    x = 1,939.86

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1.5x scale

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.