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Finding the Fourth Proportional to 18,805.98, 25,958.97 and 12,833.37

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Solution

The fourth proportional to 18,805.98, 25,958.97 and 12,833.37 is: 17,714.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.98 : 25,958.97 = 12,833.37 : x
  2. Step 2: Convert to fraction form
    18,805.98/25,958.97 = 12,833.37/x
  3. Step 3: Cross multiply
    18,805.98x = 25,958.97 × 12,833.37
  4. Step 4: Simplify right side
    18,805.98x = 333,141,066.83
  5. Step 5: Solve for x
    x = 333,141,066.83/18,805.98
  6. Step 6: Final answer
    x = 17,714.63

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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.