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Finding the Fourth Proportional to 19,488.94, 26,892.85 and 10,992.39

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Solution

The fourth proportional to 19,488.94, 26,892.85 and 10,992.39 is: 15,168.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,488.94 : 26,892.85 = 10,992.39 : x
  2. Step 2: Convert to fraction form
    19,488.94/26,892.85 = 10,992.39/x
  3. Step 3: Cross multiply
    19,488.94x = 26,892.85 × 10,992.39
  4. Step 4: Simplify right side
    19,488.94x = 295,616,695.41
  5. Step 5: Solve for x
    x = 295,616,695.41/19,488.94
  6. Step 6: Final answer
    x = 15,168.43

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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.