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Finding the Fourth Proportional to 2,246.90, 3,369.92 and 786.46

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Solution

The fourth proportional to 2,246.90, 3,369.92 and 786.46 is: 1,179.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,246.90 : 3,369.92 = 786.46 : x
  2. Step 2: Convert to fraction form
    2,246.90/3,369.92 = 786.46/x
  3. Step 3: Cross multiply
    2,246.90x = 3,369.92 × 786.46
  4. Step 4: Simplify right side
    2,246.90x = 2,650,307.28
  5. Step 5: Solve for x
    x = 2,650,307.28/2,246.90
  6. Step 6: Final answer
    x = 1,179.54

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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.