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Finding the Fourth Proportional to 24,651.22, 36,978.72 and 7,121.20

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Solution

The fourth proportional to 24,651.22, 36,978.72 and 7,121.20 is: 10,682.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,651.22 : 36,978.72 = 7,121.20 : x
  2. Step 2: Convert to fraction form
    24,651.22/36,978.72 = 7,121.20/x
  3. Step 3: Cross multiply
    24,651.22x = 36,978.72 × 7,121.20
  4. Step 4: Simplify right side
    24,651.22x = 263,332,860.86
  5. Step 5: Solve for x
    x = 263,332,860.86/24,651.22
  6. Step 6: Final answer
    x = 10,682.35

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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.