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Finding the Fourth Proportional to 1,845.53, 2,768.81 and 805.62

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Solution

The fourth proportional to 1,845.53, 2,768.81 and 805.62 is: 1,208.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,845.53 : 2,768.81 = 805.62 : x
  2. Step 2: Convert to fraction form
    1,845.53/2,768.81 = 805.62/x
  3. Step 3: Cross multiply
    1,845.53x = 2,768.81 × 805.62
  4. Step 4: Simplify right side
    1,845.53x = 2,230,609.55
  5. Step 5: Solve for x
    x = 2,230,609.55/1,845.53
  6. Step 6: Final answer
    x = 1,208.66

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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.