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Finding the Fourth Proportional to 8,771.94, 12,103.61 and 5,235.48

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Solution

The fourth proportional to 8,771.94, 12,103.61 and 5,235.48 is: 7,223.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.94 : 12,103.61 = 5,235.48 : x
  2. Step 2: Convert to fraction form
    8,771.94/12,103.61 = 5,235.48/x
  3. Step 3: Cross multiply
    8,771.94x = 12,103.61 × 5,235.48
  4. Step 4: Simplify right side
    8,771.94x = 63,368,181.91
  5. Step 5: Solve for x
    x = 63,368,181.91/8,771.94
  6. Step 6: Final answer
    x = 7,223.96

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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.