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Finding the Fourth Proportional to 19,181.80, 26,310.17 and 18,404.20

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Solution

The fourth proportional to 19,181.80, 26,310.17 and 18,404.20 is: 25,243.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,181.80 : 26,310.17 = 18,404.20 : x
  2. Step 2: Convert to fraction form
    19,181.80/26,310.17 = 18,404.20/x
  3. Step 3: Cross multiply
    19,181.80x = 26,310.17 × 18,404.20
  4. Step 4: Simplify right side
    19,181.80x = 484,217,630.71
  5. Step 5: Solve for x
    x = 484,217,630.71/19,181.80
  6. Step 6: Final answer
    x = 25,243.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.