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Finding the Fourth Proportional to 12,203.21, 16,840.46 and 6,614.21

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Solution

The fourth proportional to 12,203.21, 16,840.46 and 6,614.21 is: 9,127.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,203.21 : 16,840.46 = 6,614.21 : x
  2. Step 2: Convert to fraction form
    12,203.21/16,840.46 = 6,614.21/x
  3. Step 3: Cross multiply
    12,203.21x = 16,840.46 × 6,614.21
  4. Step 4: Simplify right side
    12,203.21x = 111,386,338.94
  5. Step 5: Solve for x
    x = 111,386,338.94/12,203.21
  6. Step 6: Final answer
    x = 9,127.63

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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.