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Finding the Fourth Proportional to 19,651.78, 27,059.40 and 14,813.54

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Solution

The fourth proportional to 19,651.78, 27,059.40 and 14,813.54 is: 20,397.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,651.78 : 27,059.40 = 14,813.54 : x
  2. Step 2: Convert to fraction form
    19,651.78/27,059.40 = 14,813.54/x
  3. Step 3: Cross multiply
    19,651.78x = 27,059.40 × 14,813.54
  4. Step 4: Simplify right side
    19,651.78x = 400,845,504.28
  5. Step 5: Solve for x
    x = 400,845,504.28/19,651.78
  6. Step 6: Final answer
    x = 20,397.41

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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.