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Finding the Fourth Proportional to 2,636.14, 3,954.16 and 787.26

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Solution

The fourth proportional to 2,636.14, 3,954.16 and 787.26 is: 1,180.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,636.14 : 3,954.16 = 787.26 : x
  2. Step 2: Convert to fraction form
    2,636.14/3,954.16 = 787.26/x
  3. Step 3: Cross multiply
    2,636.14x = 3,954.16 × 787.26
  4. Step 4: Simplify right side
    2,636.14x = 3,112,952.00
  5. Step 5: Solve for x
    x = 3,112,952.00/2,636.14
  6. Step 6: Final answer
    x = 1,180.88

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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.