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Finding the Fourth Proportional to 8,716.13, 13,121.62 and 7,941.11

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Solution

The fourth proportional to 8,716.13, 13,121.62 and 7,941.11 is: 11,954.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.13 : 13,121.62 = 7,941.11 : x
  2. Step 2: Convert to fraction form
    8,716.13/13,121.62 = 7,941.11/x
  3. Step 3: Cross multiply
    8,716.13x = 13,121.62 × 7,941.11
  4. Step 4: Simplify right side
    8,716.13x = 104,200,152.05
  5. Step 5: Solve for x
    x = 104,200,152.05/8,716.13
  6. Step 6: Final answer
    x = 11,954.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.