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Finding the Fourth Proportional to 19,328, 26,677.60 and 11,779.44

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Solution

The fourth proportional to 19,328, 26,677.60 and 11,779.44 is: 16,258.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,328 : 26,677.60 = 11,779.44 : x
  2. Step 2: Convert to fraction form
    19,328/26,677.60 = 11,779.44/x
  3. Step 3: Cross multiply
    19,328x = 26,677.60 × 11,779.44
  4. Step 4: Simplify right side
    19,328x = 314,247,188.54
  5. Step 5: Solve for x
    x = 314,247,188.54/19,328
  6. Step 6: Final answer
    x = 16,258.65

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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.