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Finding the Fourth Proportional to 2,348.44, 3,521.81 and 787.97

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Solution

The fourth proportional to 2,348.44, 3,521.81 and 787.97 is: 1,181.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,348.44 : 3,521.81 = 787.97 : x
  2. Step 2: Convert to fraction form
    2,348.44/3,521.81 = 787.97/x
  3. Step 3: Cross multiply
    2,348.44x = 3,521.81 × 787.97
  4. Step 4: Simplify right side
    2,348.44x = 2,775,091.40
  5. Step 5: Solve for x
    x = 2,775,091.40/2,348.44
  6. Step 6: Final answer
    x = 1,181.68

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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.