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Finding the Fourth Proportional to 14,954.44, 20,640.76 and 8,670.44

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Solution

The fourth proportional to 14,954.44, 20,640.76 and 8,670.44 is: 11,967.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,954.44 : 20,640.76 = 8,670.44 : x
  2. Step 2: Convert to fraction form
    14,954.44/20,640.76 = 8,670.44/x
  3. Step 3: Cross multiply
    14,954.44x = 20,640.76 × 8,670.44
  4. Step 4: Simplify right side
    14,954.44x = 178,964,471.13
  5. Step 5: Solve for x
    x = 178,964,471.13/14,954.44
  6. Step 6: Final answer
    x = 11,967.31

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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.