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Finding the Fourth Proportional to 2,529.13, 3,792.74 and 773.60

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Solution

The fourth proportional to 2,529.13, 3,792.74 and 773.60 is: 1,160.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,529.13 : 3,792.74 = 773.60 : x
  2. Step 2: Convert to fraction form
    2,529.13/3,792.74 = 773.60/x
  3. Step 3: Cross multiply
    2,529.13x = 3,792.74 × 773.60
  4. Step 4: Simplify right side
    2,529.13x = 2,934,059.80
  5. Step 5: Solve for x
    x = 2,934,059.80/2,529.13
  6. Step 6: Final answer
    x = 1,160.11

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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.