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Finding the Fourth Proportional to 18,481.94, 25,490.66 and 16,359.74

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Solution

The fourth proportional to 18,481.94, 25,490.66 and 16,359.74 is: 22,563.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481.94 : 25,490.66 = 16,359.74 : x
  2. Step 2: Convert to fraction form
    18,481.94/25,490.66 = 16,359.74/x
  3. Step 3: Cross multiply
    18,481.94x = 25,490.66 × 16,359.74
  4. Step 4: Simplify right side
    18,481.94x = 417,020,570.03
  5. Step 5: Solve for x
    x = 417,020,570.03/18,481.94
  6. Step 6: Final answer
    x = 22,563.68

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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.