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Finding the Fourth Proportional to 19,488.54, 26,894.79 and 11,104.50

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Solution

The fourth proportional to 19,488.54, 26,894.79 and 11,104.50 is: 15,324.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,488.54 : 26,894.79 = 11,104.50 : x
  2. Step 2: Convert to fraction form
    19,488.54/26,894.79 = 11,104.50/x
  3. Step 3: Cross multiply
    19,488.54x = 26,894.79 × 11,104.50
  4. Step 4: Simplify right side
    19,488.54x = 298,653,195.56
  5. Step 5: Solve for x
    x = 298,653,195.56/19,488.54
  6. Step 6: Final answer
    x = 15,324.55

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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.