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Finding the Fourth Proportional to 19,791.99, 29,643.30 and 13,894.92

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Solution

The fourth proportional to 19,791.99, 29,643.30 and 13,894.92 is: 20,811.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.99 : 29,643.30 = 13,894.92 : x
  2. Step 2: Convert to fraction form
    19,791.99/29,643.30 = 13,894.92/x
  3. Step 3: Cross multiply
    19,791.99x = 29,643.30 × 13,894.92
  4. Step 4: Simplify right side
    19,791.99x = 411,891,282.04
  5. Step 5: Solve for x
    x = 411,891,282.04/19,791.99
  6. Step 6: Final answer
    x = 20,811.01

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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.