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Finding the Fourth Proportional to 18,737.63, 25,860.56 and 12,042.37

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Solution

The fourth proportional to 18,737.63, 25,860.56 and 12,042.37 is: 16,620.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,737.63 : 25,860.56 = 12,042.37 : x
  2. Step 2: Convert to fraction form
    18,737.63/25,860.56 = 12,042.37/x
  3. Step 3: Cross multiply
    18,737.63x = 25,860.56 × 12,042.37
  4. Step 4: Simplify right side
    18,737.63x = 311,422,431.93
  5. Step 5: Solve for x
    x = 311,422,431.93/18,737.63
  6. Step 6: Final answer
    x = 16,620.16

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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.