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Finding the Fourth Proportional to 2,496.54, 3,745 and 765.22

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Solution

The fourth proportional to 2,496.54, 3,745 and 765.22 is: 1,147.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,496.54 : 3,745 = 765.22 : x
  2. Step 2: Convert to fraction form
    2,496.54/3,745 = 765.22/x
  3. Step 3: Cross multiply
    2,496.54x = 3,745 × 765.22
  4. Step 4: Simplify right side
    2,496.54x = 2,865,748.90
  5. Step 5: Solve for x
    x = 2,865,748.90/2,496.54
  6. Step 6: Final answer
    x = 1,147.89

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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.