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Finding the Fourth Proportional to 18,928.27, 26,104.03 and 11,855.35

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Solution

The fourth proportional to 18,928.27, 26,104.03 and 11,855.35 is: 16,349.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.27 : 26,104.03 = 11,855.35 : x
  2. Step 2: Convert to fraction form
    18,928.27/26,104.03 = 11,855.35/x
  3. Step 3: Cross multiply
    18,928.27x = 26,104.03 × 11,855.35
  4. Step 4: Simplify right side
    18,928.27x = 309,472,412.06
  5. Step 5: Solve for x
    x = 309,472,412.06/18,928.27
  6. Step 6: Final answer
    x = 16,349.75

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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.