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Finding the Fourth Proportional to 12,216.43, 16,858.65 and 6,627.43

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Solution

The fourth proportional to 12,216.43, 16,858.65 and 6,627.43 is: 9,145.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.43 : 16,858.65 = 6,627.43 : x
  2. Step 2: Convert to fraction form
    12,216.43/16,858.65 = 6,627.43/x
  3. Step 3: Cross multiply
    12,216.43x = 16,858.65 × 6,627.43
  4. Step 4: Simplify right side
    12,216.43x = 111,729,522.77
  5. Step 5: Solve for x
    x = 111,729,522.77/12,216.43
  6. Step 6: Final answer
    x = 9,145.84

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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.