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Finding the Fourth Proportional to 7,281.92, 10,923.36 and 2,668.16

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Solution

The fourth proportional to 7,281.92, 10,923.36 and 2,668.16 is: 4,002.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281.92 : 10,923.36 = 2,668.16 : x
  2. Step 2: Convert to fraction form
    7,281.92/10,923.36 = 2,668.16/x
  3. Step 3: Cross multiply
    7,281.92x = 10,923.36 × 2,668.16
  4. Step 4: Simplify right side
    7,281.92x = 29,145,272.22
  5. Step 5: Solve for x
    x = 29,145,272.22/7,281.92
  6. Step 6: Final answer
    x = 4,002.42

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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.