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Finding the Fourth Proportional to 2,236.95, 3,353.00 and 775.31

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Solution

The fourth proportional to 2,236.95, 3,353.00 and 775.31 is: 1,162.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,236.95 : 3,353.00 = 775.31 : x
  2. Step 2: Convert to fraction form
    2,236.95/3,353.00 = 775.31/x
  3. Step 3: Cross multiply
    2,236.95x = 3,353.00 × 775.31
  4. Step 4: Simplify right side
    2,236.95x = 2,599,593.79
  5. Step 5: Solve for x
    x = 2,599,593.79/2,236.95
  6. Step 6: Final answer
    x = 1,162.12

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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.