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Finding the Fourth Proportional to 12,992.22, 17,929.26 and 7,023.87

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Solution

The fourth proportional to 12,992.22, 17,929.26 and 7,023.87 is: 9,692.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,992.22 : 17,929.26 = 7,023.87 : x
  2. Step 2: Convert to fraction form
    12,992.22/17,929.26 = 7,023.87/x
  3. Step 3: Cross multiply
    12,992.22x = 17,929.26 × 7,023.87
  4. Step 4: Simplify right side
    12,992.22x = 125,932,791.44
  5. Step 5: Solve for x
    x = 125,932,791.44/12,992.22
  6. Step 6: Final answer
    x = 9,692.94

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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.