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Finding the Fourth Proportional to 9,267.92, 12,791.22 and 5,289.20

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Solution

The fourth proportional to 9,267.92, 12,791.22 and 5,289.20 is: 7,299.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,267.92 : 12,791.22 = 5,289.20 : x
  2. Step 2: Convert to fraction form
    9,267.92/12,791.22 = 5,289.20/x
  3. Step 3: Cross multiply
    9,267.92x = 12,791.22 × 5,289.20
  4. Step 4: Simplify right side
    9,267.92x = 67,655,320.82
  5. Step 5: Solve for x
    x = 67,655,320.82/9,267.92
  6. Step 6: Final answer
    x = 7,299.95

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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.