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Finding the Fourth Proportional to 18,879.64, 26,015.51 and 14,604.74

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Solution

The fourth proportional to 18,879.64, 26,015.51 and 14,604.74 is: 20,124.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.64 : 26,015.51 = 14,604.74 : x
  2. Step 2: Convert to fraction form
    18,879.64/26,015.51 = 14,604.74/x
  3. Step 3: Cross multiply
    18,879.64x = 26,015.51 × 14,604.74
  4. Step 4: Simplify right side
    18,879.64x = 379,949,665.95
  5. Step 5: Solve for x
    x = 379,949,665.95/18,879.64
  6. Step 6: Final answer
    x = 20,124.84

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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.