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Finding the Fourth Proportional to 20,793.97, 28,695.65 and 11,841.48

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Solution

The fourth proportional to 20,793.97, 28,695.65 and 11,841.48 is: 16,341.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.97 : 28,695.65 = 11,841.48 : x
  2. Step 2: Convert to fraction form
    20,793.97/28,695.65 = 11,841.48/x
  3. Step 3: Cross multiply
    20,793.97x = 28,695.65 × 11,841.48
  4. Step 4: Simplify right side
    20,793.97x = 339,798,762.88
  5. Step 5: Solve for x
    x = 339,798,762.88/20,793.97
  6. Step 6: Final answer
    x = 16,341.22

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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.