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Finding the Fourth Proportional to 18,879.75, 26,055.68 and 10,497.87

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Solution

The fourth proportional to 18,879.75, 26,055.68 and 10,497.87 is: 14,487.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.75 : 26,055.68 = 10,497.87 : x
  2. Step 2: Convert to fraction form
    18,879.75/26,055.68 = 10,497.87/x
  3. Step 3: Cross multiply
    18,879.75x = 26,055.68 × 10,497.87
  4. Step 4: Simplify right side
    18,879.75x = 273,529,088.91
  5. Step 5: Solve for x
    x = 273,529,088.91/18,879.75
  6. Step 6: Final answer
    x = 14,487.96

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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.