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Finding the Fourth Proportional to 7,223.11, 9,968.18 and 5,451.64

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Solution

The fourth proportional to 7,223.11, 9,968.18 and 5,451.64 is: 7,523.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,223.11 : 9,968.18 = 5,451.64 : x
  2. Step 2: Convert to fraction form
    7,223.11/9,968.18 = 5,451.64/x
  3. Step 3: Cross multiply
    7,223.11x = 9,968.18 × 5,451.64
  4. Step 4: Simplify right side
    7,223.11x = 54,342,928.82
  5. Step 5: Solve for x
    x = 54,342,928.82/7,223.11
  6. Step 6: Final answer
    x = 7,523.48

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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.