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Finding the Fourth Proportional to 2,524.86, 3,786.75 and 769.48

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Solution

The fourth proportional to 2,524.86, 3,786.75 and 769.48 is: 1,154.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,524.86 : 3,786.75 = 769.48 : x
  2. Step 2: Convert to fraction form
    2,524.86/3,786.75 = 769.48/x
  3. Step 3: Cross multiply
    2,524.86x = 3,786.75 × 769.48
  4. Step 4: Simplify right side
    2,524.86x = 2,913,818.92
  5. Step 5: Solve for x
    x = 2,913,818.92/2,524.86
  6. Step 6: Final answer
    x = 1,154.05

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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.