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Finding the Fourth Proportional to 18,876.91, 26,050.43 and 10,379.40

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Solution

The fourth proportional to 18,876.91, 26,050.43 and 10,379.40 is: 14,323.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.91 : 26,050.43 = 10,379.40 : x
  2. Step 2: Convert to fraction form
    18,876.91/26,050.43 = 10,379.40/x
  3. Step 3: Cross multiply
    18,876.91x = 26,050.43 × 10,379.40
  4. Step 4: Simplify right side
    18,876.91x = 270,387,833.14
  5. Step 5: Solve for x
    x = 270,387,833.14/18,876.91
  6. Step 6: Final answer
    x = 14,323.73

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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.