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Finding the Fourth Proportional to 28,914.80, 43,372.20 and 22,002.80

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Solution

The fourth proportional to 28,914.80, 43,372.20 and 22,002.80 is: 33,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,914.80 : 43,372.20 = 22,002.80 : x
  2. Step 2: Convert to fraction form
    28,914.80/43,372.20 = 22,002.80/x
  3. Step 3: Cross multiply
    28,914.80x = 43,372.20 × 22,002.80
  4. Step 4: Simplify right side
    28,914.80x = 954,309,842.16
  5. Step 5: Solve for x
    x = 954,309,842.16/28,914.80
  6. Step 6: Final answer
    x = 33,004.20

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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.