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Finding the Fourth Proportional to 2,267.46, 3,400.38 and 786.30

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Solution

The fourth proportional to 2,267.46, 3,400.38 and 786.30 is: 1,179.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,267.46 : 3,400.38 = 786.30 : x
  2. Step 2: Convert to fraction form
    2,267.46/3,400.38 = 786.30/x
  3. Step 3: Cross multiply
    2,267.46x = 3,400.38 × 786.30
  4. Step 4: Simplify right side
    2,267.46x = 2,673,718.79
  5. Step 5: Solve for x
    x = 2,673,718.79/2,267.46
  6. Step 6: Final answer
    x = 1,179.17

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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.