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Finding the Fourth Proportional to 20,287.58, 28,016.01 and 19,183.14

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Solution

The fourth proportional to 20,287.58, 28,016.01 and 19,183.14 is: 26,490.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.58 : 28,016.01 = 19,183.14 : x
  2. Step 2: Convert to fraction form
    20,287.58/28,016.01 = 19,183.14/x
  3. Step 3: Cross multiply
    20,287.58x = 28,016.01 × 19,183.14
  4. Step 4: Simplify right side
    20,287.58x = 537,435,042.07
  5. Step 5: Solve for x
    x = 537,435,042.07/20,287.58
  6. Step 6: Final answer
    x = 26,490.85

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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.