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Finding the Fourth Proportional to 20,441.70, 28,676.70 and 20,441.70

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Solution

The fourth proportional to 20,441.70, 28,676.70 and 20,441.70 is: 28,676.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,441.70 : 28,676.70 = 20,441.70 : x
  2. Step 2: Convert to fraction form
    20,441.70/28,676.70 = 20,441.70/x
  3. Step 3: Cross multiply
    20,441.70x = 28,676.70 × 20,441.70
  4. Step 4: Simplify right side
    20,441.70x = 586,200,498.39
  5. Step 5: Solve for x
    x = 586,200,498.39/20,441.70
  6. Step 6: Final answer
    x = 28,676.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.