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Finding the Fourth Proportional to 2,236.70, 3,355.46 and 776.00

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Solution

The fourth proportional to 2,236.70, 3,355.46 and 776.00 is: 1,164.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,236.70 : 3,355.46 = 776.00 : x
  2. Step 2: Convert to fraction form
    2,236.70/3,355.46 = 776.00/x
  3. Step 3: Cross multiply
    2,236.70x = 3,355.46 × 776.00
  4. Step 4: Simplify right side
    2,236.70x = 2,603,816.30
  5. Step 5: Solve for x
    x = 2,603,816.30/2,236.70
  6. Step 6: Final answer
    x = 1,164.14

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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.