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Finding the Fourth Proportional to 2,436.69, 3,655.05 and 793.20

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Solution

The fourth proportional to 2,436.69, 3,655.05 and 793.20 is: 1,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,436.69 : 3,655.05 = 793.20 : x
  2. Step 2: Convert to fraction form
    2,436.69/3,655.05 = 793.20/x
  3. Step 3: Cross multiply
    2,436.69x = 3,655.05 × 793.20
  4. Step 4: Simplify right side
    2,436.69x = 2,899,185.66
  5. Step 5: Solve for x
    x = 2,899,185.66/2,436.69
  6. Step 6: Final answer
    x = 1,189.80

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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.