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Finding the Fourth Proportional to 8,761.15, 13,133.22 and 3,494.63

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Solution

The fourth proportional to 8,761.15, 13,133.22 and 3,494.63 is: 5,238.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761.15 : 13,133.22 = 3,494.63 : x
  2. Step 2: Convert to fraction form
    8,761.15/13,133.22 = 3,494.63/x
  3. Step 3: Cross multiply
    8,761.15x = 13,133.22 × 3,494.63
  4. Step 4: Simplify right side
    8,761.15x = 45,895,744.61
  5. Step 5: Solve for x
    x = 45,895,744.61/8,761.15
  6. Step 6: Final answer
    x = 5,238.55

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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.