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Finding the Fourth Proportional to 8,716.60, 12,027.99 and 5,179.33

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Solution

The fourth proportional to 8,716.60, 12,027.99 and 5,179.33 is: 7,146.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.60 : 12,027.99 = 5,179.33 : x
  2. Step 2: Convert to fraction form
    8,716.60/12,027.99 = 5,179.33/x
  3. Step 3: Cross multiply
    8,716.60x = 12,027.99 × 5,179.33
  4. Step 4: Simplify right side
    8,716.60x = 62,296,929.45
  5. Step 5: Solve for x
    x = 62,296,929.45/8,716.60
  6. Step 6: Final answer
    x = 7,146.93

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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.