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Finding the Fourth Proportional to 19,791.82, 27,313.02 and 10,839.16

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Solution

The fourth proportional to 19,791.82, 27,313.02 and 10,839.16 is: 14,958.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.82 : 27,313.02 = 10,839.16 : x
  2. Step 2: Convert to fraction form
    19,791.82/27,313.02 = 10,839.16/x
  3. Step 3: Cross multiply
    19,791.82x = 27,313.02 × 10,839.16
  4. Step 4: Simplify right side
    19,791.82x = 296,050,193.86
  5. Step 5: Solve for x
    x = 296,050,193.86/19,791.82
  6. Step 6: Final answer
    x = 14,958.21

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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.