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Finding the Fourth Proportional to 5,307.80, 7,961.46 and 1,797.60

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Solution

The fourth proportional to 5,307.80, 7,961.46 and 1,797.60 is: 2,696.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,307.80 : 7,961.46 = 1,797.60 : x
  2. Step 2: Convert to fraction form
    5,307.80/7,961.46 = 1,797.60/x
  3. Step 3: Cross multiply
    5,307.80x = 7,961.46 × 1,797.60
  4. Step 4: Simplify right side
    5,307.80x = 14,311,520.50
  5. Step 5: Solve for x
    x = 14,311,520.50/5,307.80
  6. Step 6: Final answer
    x = 2,696.32

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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.