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Finding the Fourth Proportional to 19,504.99, 26,904.47 and 12,791.04

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Solution

The fourth proportional to 19,504.99, 26,904.47 and 12,791.04 is: 17,643.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,504.99 : 26,904.47 = 12,791.04 : x
  2. Step 2: Convert to fraction form
    19,504.99/26,904.47 = 12,791.04/x
  3. Step 3: Cross multiply
    19,504.99x = 26,904.47 × 12,791.04
  4. Step 4: Simplify right side
    19,504.99x = 344,136,035.07
  5. Step 5: Solve for x
    x = 344,136,035.07/19,504.99
  6. Step 6: Final answer
    x = 17,643.49

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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.