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Finding the Fourth Proportional to 20,793.94, 28,696.35 and 11,363.11

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Solution

The fourth proportional to 20,793.94, 28,696.35 and 11,363.11 is: 15,681.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.94 : 28,696.35 = 11,363.11 : x
  2. Step 2: Convert to fraction form
    20,793.94/28,696.35 = 11,363.11/x
  3. Step 3: Cross multiply
    20,793.94x = 28,696.35 × 11,363.11
  4. Step 4: Simplify right side
    20,793.94x = 326,079,724.83
  5. Step 5: Solve for x
    x = 326,079,724.83/20,793.94
  6. Step 6: Final answer
    x = 15,681.48

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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.