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Finding the Fourth Proportional to 14,607.94, 20,161.49 and 14,121.94

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Solution

The fourth proportional to 14,607.94, 20,161.49 and 14,121.94 is: 19,490.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,607.94 : 20,161.49 = 14,121.94 : x
  2. Step 2: Convert to fraction form
    14,607.94/20,161.49 = 14,121.94/x
  3. Step 3: Cross multiply
    14,607.94x = 20,161.49 × 14,121.94
  4. Step 4: Simplify right side
    14,607.94x = 284,719,352.09
  5. Step 5: Solve for x
    x = 284,719,352.09/14,607.94
  6. Step 6: Final answer
    x = 19,490.73

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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.