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Finding the Fourth Proportional to 2,272.66, 3,409.29 and 792.18

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Solution

The fourth proportional to 2,272.66, 3,409.29 and 792.18 is: 1,188.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.66 : 3,409.29 = 792.18 : x
  2. Step 2: Convert to fraction form
    2,272.66/3,409.29 = 792.18/x
  3. Step 3: Cross multiply
    2,272.66x = 3,409.29 × 792.18
  4. Step 4: Simplify right side
    2,272.66x = 2,700,771.35
  5. Step 5: Solve for x
    x = 2,700,771.35/2,272.66
  6. Step 6: Final answer
    x = 1,188.38

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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.