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Finding the Fourth Proportional to 6,711.63, 9,263.26 and 3,878.61

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Solution

The fourth proportional to 6,711.63, 9,263.26 and 3,878.61 is: 5,353.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,711.63 : 9,263.26 = 3,878.61 : x
  2. Step 2: Convert to fraction form
    6,711.63/9,263.26 = 3,878.61/x
  3. Step 3: Cross multiply
    6,711.63x = 9,263.26 × 3,878.61
  4. Step 4: Simplify right side
    6,711.63x = 35,928,610.23
  5. Step 5: Solve for x
    x = 35,928,610.23/6,711.63
  6. Step 6: Final answer
    x = 5,353.19

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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.