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Finding the Fourth Proportional to 6,961.80, 10,450.80 and 4,191.60

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Solution

The fourth proportional to 6,961.80, 10,450.80 and 4,191.60 is: 6,292.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,961.80 : 10,450.80 = 4,191.60 : x
  2. Step 2: Convert to fraction form
    6,961.80/10,450.80 = 4,191.60/x
  3. Step 3: Cross multiply
    6,961.80x = 10,450.80 × 4,191.60
  4. Step 4: Simplify right side
    6,961.80x = 43,805,573.28
  5. Step 5: Solve for x
    x = 43,805,573.28/6,961.80
  6. Step 6: Final answer
    x = 6,292.28

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1.5x scale

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.