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Finding the Fourth Proportional to 14,466.67, 19,961.64 and 8,418.26

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Solution

The fourth proportional to 14,466.67, 19,961.64 and 8,418.26 is: 11,615.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,466.67 : 19,961.64 = 8,418.26 : x
  2. Step 2: Convert to fraction form
    14,466.67/19,961.64 = 8,418.26/x
  3. Step 3: Cross multiply
    14,466.67x = 19,961.64 × 8,418.26
  4. Step 4: Simplify right side
    14,466.67x = 168,042,325.45
  5. Step 5: Solve for x
    x = 168,042,325.45/14,466.67
  6. Step 6: Final answer
    x = 11,615.83

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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.