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Finding the Fourth Proportional to 1,633.64, 2,254.62 and 935

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Solution

The fourth proportional to 1,633.64, 2,254.62 and 935 is: 1,290.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,633.64 : 2,254.62 = 935 : x
  2. Step 2: Convert to fraction form
    1,633.64/2,254.62 = 935/x
  3. Step 3: Cross multiply
    1,633.64x = 2,254.62 × 935
  4. Step 4: Simplify right side
    1,633.64x = 2,108,069.70
  5. Step 5: Solve for x
    x = 2,108,069.70/1,633.64
  6. Step 6: Final answer
    x = 1,290.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.