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Finding the Fourth Proportional to 18,879.96, 26,175.45 and 17,830.20

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Solution

The fourth proportional to 18,879.96, 26,175.45 and 17,830.20 is: 24,720.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.96 : 26,175.45 = 17,830.20 : x
  2. Step 2: Convert to fraction form
    18,879.96/26,175.45 = 17,830.20/x
  3. Step 3: Cross multiply
    18,879.96x = 26,175.45 × 17,830.20
  4. Step 4: Simplify right side
    18,879.96x = 466,713,508.59
  5. Step 5: Solve for x
    x = 466,713,508.59/18,879.96
  6. Step 6: Final answer
    x = 24,720.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.