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Finding the Fourth Proportional to 18,698.94, 25,805.34 and 10,743.66

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Solution

The fourth proportional to 18,698.94, 25,805.34 and 10,743.66 is: 14,826.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.94 : 25,805.34 = 10,743.66 : x
  2. Step 2: Convert to fraction form
    18,698.94/25,805.34 = 10,743.66/x
  3. Step 3: Cross multiply
    18,698.94x = 25,805.34 × 10,743.66
  4. Step 4: Simplify right side
    18,698.94x = 277,243,799.14
  5. Step 5: Solve for x
    x = 277,243,799.14/18,698.94
  6. Step 6: Final answer
    x = 14,826.71

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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.