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Finding the Fourth Proportional to 4,786.92, 7,180.38 and 1,324.08

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Solution

The fourth proportional to 4,786.92, 7,180.38 and 1,324.08 is: 1,986.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.92 : 7,180.38 = 1,324.08 : x
  2. Step 2: Convert to fraction form
    4,786.92/7,180.38 = 1,324.08/x
  3. Step 3: Cross multiply
    4,786.92x = 7,180.38 × 1,324.08
  4. Step 4: Simplify right side
    4,786.92x = 9,507,397.55
  5. Step 5: Solve for x
    x = 9,507,397.55/4,786.92
  6. Step 6: Final answer
    x = 1,986.12

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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.