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Finding the Fourth Proportional to 7,226.80, 9,969 and 4,241.20

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Solution

The fourth proportional to 7,226.80, 9,969 and 4,241.20 is: 5,850.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,226.80 : 9,969 = 4,241.20 : x
  2. Step 2: Convert to fraction form
    7,226.80/9,969 = 4,241.20/x
  3. Step 3: Cross multiply
    7,226.80x = 9,969 × 4,241.20
  4. Step 4: Simplify right side
    7,226.80x = 42,280,522.80
  5. Step 5: Solve for x
    x = 42,280,522.80/7,226.80
  6. Step 6: Final answer
    x = 5,850.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.