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Finding the Fourth Proportional to 2,524.51, 3,786.90 and 769.38

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Solution

The fourth proportional to 2,524.51, 3,786.90 and 769.38 is: 1,154.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,524.51 : 3,786.90 = 769.38 : x
  2. Step 2: Convert to fraction form
    2,524.51/3,786.90 = 769.38/x
  3. Step 3: Cross multiply
    2,524.51x = 3,786.90 × 769.38
  4. Step 4: Simplify right side
    2,524.51x = 2,913,565.12
  5. Step 5: Solve for x
    x = 2,913,565.12/2,524.51
  6. Step 6: Final answer
    x = 1,154.11

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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.