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Finding the Fourth Proportional to 18,276.64, 27,425.90 and 16,789.48

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Solution

The fourth proportional to 18,276.64, 27,425.90 and 16,789.48 is: 25,194.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,276.64 : 27,425.90 = 16,789.48 : x
  2. Step 2: Convert to fraction form
    18,276.64/27,425.90 = 16,789.48/x
  3. Step 3: Cross multiply
    18,276.64x = 27,425.90 × 16,789.48
  4. Step 4: Simplify right side
    18,276.64x = 460,466,599.53
  5. Step 5: Solve for x
    x = 460,466,599.53/18,276.64
  6. Step 6: Final answer
    x = 25,194.27

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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.