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Finding the Fourth Proportional to 18,919.31, 28,477.61 and 16,065.27

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Solution

The fourth proportional to 18,919.31, 28,477.61 and 16,065.27 is: 24,181.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.31 : 28,477.61 = 16,065.27 : x
  2. Step 2: Convert to fraction form
    18,919.31/28,477.61 = 16,065.27/x
  3. Step 3: Cross multiply
    18,919.31x = 28,477.61 × 16,065.27
  4. Step 4: Simplify right side
    18,919.31x = 457,500,473.52
  5. Step 5: Solve for x
    x = 457,500,473.52/18,919.31
  6. Step 6: Final answer
    x = 24,181.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.