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Finding the Fourth Proportional to 14,957.23, 20,640.42 and 8,579.44

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Solution

The fourth proportional to 14,957.23, 20,640.42 and 8,579.44 is: 11,839.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,957.23 : 20,640.42 = 8,579.44 : x
  2. Step 2: Convert to fraction form
    14,957.23/20,640.42 = 8,579.44/x
  3. Step 3: Cross multiply
    14,957.23x = 20,640.42 × 8,579.44
  4. Step 4: Simplify right side
    14,957.23x = 177,083,244.96
  5. Step 5: Solve for x
    x = 177,083,244.96/14,957.23
  6. Step 6: Final answer
    x = 11,839.31

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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.