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Finding the Fourth Proportional to 28,025.91, 38,676.02 and 15,451.11

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Solution

The fourth proportional to 28,025.91, 38,676.02 and 15,451.11 is: 21,322.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,025.91 : 38,676.02 = 15,451.11 : x
  2. Step 2: Convert to fraction form
    28,025.91/38,676.02 = 15,451.11/x
  3. Step 3: Cross multiply
    28,025.91x = 38,676.02 × 15,451.11
  4. Step 4: Simplify right side
    28,025.91x = 597,587,439.38
  5. Step 5: Solve for x
    x = 597,587,439.38/28,025.91
  6. Step 6: Final answer
    x = 21,322.68

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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.