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Finding the Fourth Proportional to 2,236.17, 3,354.63 and 755.40

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Solution

The fourth proportional to 2,236.17, 3,354.63 and 755.40 is: 1,133.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,236.17 : 3,354.63 = 755.40 : x
  2. Step 2: Convert to fraction form
    2,236.17/3,354.63 = 755.40/x
  3. Step 3: Cross multiply
    2,236.17x = 3,354.63 × 755.40
  4. Step 4: Simplify right side
    2,236.17x = 2,534,081.72
  5. Step 5: Solve for x
    x = 2,534,081.72/2,236.17
  6. Step 6: Final answer
    x = 1,133.23

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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.