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Finding the Fourth Proportional to 18,533.70, 25,616.50 and 16,394.10

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Solution

The fourth proportional to 18,533.70, 25,616.50 and 16,394.10 is: 22,659.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,533.70 : 25,616.50 = 16,394.10 : x
  2. Step 2: Convert to fraction form
    18,533.70/25,616.50 = 16,394.10/x
  3. Step 3: Cross multiply
    18,533.70x = 25,616.50 × 16,394.10
  4. Step 4: Simplify right side
    18,533.70x = 419,959,462.65
  5. Step 5: Solve for x
    x = 419,959,462.65/18,533.70
  6. Step 6: Final answer
    x = 22,659.23

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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.