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Finding the Fourth Proportional to 2,740.76, 4,111.17 and 792.96

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Solution

The fourth proportional to 2,740.76, 4,111.17 and 792.96 is: 1,189.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.76 : 4,111.17 = 792.96 : x
  2. Step 2: Convert to fraction form
    2,740.76/4,111.17 = 792.96/x
  3. Step 3: Cross multiply
    2,740.76x = 4,111.17 × 792.96
  4. Step 4: Simplify right side
    2,740.76x = 3,259,993.36
  5. Step 5: Solve for x
    x = 3,259,993.36/2,740.76
  6. Step 6: Final answer
    x = 1,189.45

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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.