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Finding the Fourth Proportional to 7,866.75, 11,801.95 and 2,672.63

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Solution

The fourth proportional to 7,866.75, 11,801.95 and 2,672.63 is: 4,009.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,866.75 : 11,801.95 = 2,672.63 : x
  2. Step 2: Convert to fraction form
    7,866.75/11,801.95 = 2,672.63/x
  3. Step 3: Cross multiply
    7,866.75x = 11,801.95 × 2,672.63
  4. Step 4: Simplify right side
    7,866.75x = 31,542,245.63
  5. Step 5: Solve for x
    x = 31,542,245.63/7,866.75
  6. Step 6: Final answer
    x = 4,009.57

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1.5x scale

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.