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Finding the Fourth Proportional to 4,915.90, 7,375.80 and 1,796.13

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Solution

The fourth proportional to 4,915.90, 7,375.80 and 1,796.13 is: 2,694.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.90 : 7,375.80 = 1,796.13 : x
  2. Step 2: Convert to fraction form
    4,915.90/7,375.80 = 1,796.13/x
  3. Step 3: Cross multiply
    4,915.90x = 7,375.80 × 1,796.13
  4. Step 4: Simplify right side
    4,915.90x = 13,247,895.65
  5. Step 5: Solve for x
    x = 13,247,895.65/4,915.90
  6. Step 6: Final answer
    x = 2,694.91

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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.