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Finding the Fourth Proportional to 36,798.98, 55,198.09 and 15,721.09

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Solution

The fourth proportional to 36,798.98, 55,198.09 and 15,721.09 is: 23,581.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,798.98 : 55,198.09 = 15,721.09 : x
  2. Step 2: Convert to fraction form
    36,798.98/55,198.09 = 15,721.09/x
  3. Step 3: Cross multiply
    36,798.98x = 55,198.09 × 15,721.09
  4. Step 4: Simplify right side
    36,798.98x = 867,774,022.37
  5. Step 5: Solve for x
    x = 867,774,022.37/36,798.98
  6. Step 6: Final answer
    x = 23,581.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.