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Finding the Fourth Proportional to 26,967.80, 40,445.22 and 13,813.40

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Solution

The fourth proportional to 26,967.80, 40,445.22 and 13,813.40 is: 20,716.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,967.80 : 40,445.22 = 13,813.40 : x
  2. Step 2: Convert to fraction form
    26,967.80/40,445.22 = 13,813.40/x
  3. Step 3: Cross multiply
    26,967.80x = 40,445.22 × 13,813.40
  4. Step 4: Simplify right side
    26,967.80x = 558,686,001.95
  5. Step 5: Solve for x
    x = 558,686,001.95/26,967.80
  6. Step 6: Final answer
    x = 20,716.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.