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Finding the Fourth Proportional to 19,791.99, 27,312.99 and 10,717.45

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Solution

The fourth proportional to 19,791.99, 27,312.99 and 10,717.45 is: 14,790.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.99 : 27,312.99 = 10,717.45 : x
  2. Step 2: Convert to fraction form
    19,791.99/27,312.99 = 10,717.45/x
  3. Step 3: Cross multiply
    19,791.99x = 27,312.99 × 10,717.45
  4. Step 4: Simplify right side
    19,791.99x = 292,725,604.68
  5. Step 5: Solve for x
    x = 292,725,604.68/19,791.99
  6. Step 6: Final answer
    x = 14,790.10

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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.