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Finding the Fourth Proportional to 20,793.68, 28,695.28 and 11,362.26

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Solution

The fourth proportional to 20,793.68, 28,695.28 and 11,362.26 is: 15,679.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.68 : 28,695.28 = 11,362.26 : x
  2. Step 2: Convert to fraction form
    20,793.68/28,695.28 = 11,362.26/x
  3. Step 3: Cross multiply
    20,793.68x = 28,695.28 × 11,362.26
  4. Step 4: Simplify right side
    20,793.68x = 326,043,232.13
  5. Step 5: Solve for x
    x = 326,043,232.13/20,793.68
  6. Step 6: Final answer
    x = 15,679.92

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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.