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Finding the Fourth Proportional to 2,740.34, 4,109.70 and 792.56

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Solution

The fourth proportional to 2,740.34, 4,109.70 and 792.56 is: 1,188.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.34 : 4,109.70 = 792.56 : x
  2. Step 2: Convert to fraction form
    2,740.34/4,109.70 = 792.56/x
  3. Step 3: Cross multiply
    2,740.34x = 4,109.70 × 792.56
  4. Step 4: Simplify right side
    2,740.34x = 3,257,183.83
  5. Step 5: Solve for x
    x = 3,257,183.83/2,740.34
  6. Step 6: Final answer
    x = 1,188.61

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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.