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Finding the Fourth Proportional to 20,794.44, 28,695.06 and 11,362.44

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Solution

The fourth proportional to 20,794.44, 28,695.06 and 11,362.44 is: 15,679.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.44 : 28,695.06 = 11,362.44 : x
  2. Step 2: Convert to fraction form
    20,794.44/28,695.06 = 11,362.44/x
  3. Step 3: Cross multiply
    20,794.44x = 28,695.06 × 11,362.44
  4. Step 4: Simplify right side
    20,794.44x = 326,045,897.55
  5. Step 5: Solve for x
    x = 326,045,897.55/20,794.44
  6. Step 6: Final answer
    x = 15,679.47

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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.