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Finding the Fourth Proportional to 2,254.51, 3,382.31 and 694.45

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Solution

The fourth proportional to 2,254.51, 3,382.31 and 694.45 is: 1,041.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,254.51 : 3,382.31 = 694.45 : x
  2. Step 2: Convert to fraction form
    2,254.51/3,382.31 = 694.45/x
  3. Step 3: Cross multiply
    2,254.51x = 3,382.31 × 694.45
  4. Step 4: Simplify right side
    2,254.51x = 2,348,845.18
  5. Step 5: Solve for x
    x = 2,348,845.18/2,254.51
  6. Step 6: Final answer
    x = 1,041.84

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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.