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Finding the Fourth Proportional to 20,751.66, 28,633.22 and 11,797.62

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Solution

The fourth proportional to 20,751.66, 28,633.22 and 11,797.62 is: 16,278.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.66 : 28,633.22 = 11,797.62 : x
  2. Step 2: Convert to fraction form
    20,751.66/28,633.22 = 11,797.62/x
  3. Step 3: Cross multiply
    20,751.66x = 28,633.22 × 11,797.62
  4. Step 4: Simplify right side
    20,751.66x = 337,803,848.94
  5. Step 5: Solve for x
    x = 337,803,848.94/20,751.66
  6. Step 6: Final answer
    x = 16,278.40

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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.