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Finding the Fourth Proportional to 14,425.10, 19,906.62 and 8,137.46

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Solution

The fourth proportional to 14,425.10, 19,906.62 and 8,137.46 is: 11,229.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,425.10 : 19,906.62 = 8,137.46 : x
  2. Step 2: Convert to fraction form
    14,425.10/19,906.62 = 8,137.46/x
  3. Step 3: Cross multiply
    14,425.10x = 19,906.62 × 8,137.46
  4. Step 4: Simplify right side
    14,425.10x = 161,989,323.99
  5. Step 5: Solve for x
    x = 161,989,323.99/14,425.10
  6. Step 6: Final answer
    x = 11,229.68

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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.