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Finding the Fourth Proportional to 20,323.48, 28,046.48 and 11,372.44

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Solution

The fourth proportional to 20,323.48, 28,046.48 and 11,372.44 is: 15,694.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,323.48 : 28,046.48 = 11,372.44 : x
  2. Step 2: Convert to fraction form
    20,323.48/28,046.48 = 11,372.44/x
  3. Step 3: Cross multiply
    20,323.48x = 28,046.48 × 11,372.44
  4. Step 4: Simplify right side
    20,323.48x = 318,956,911.01
  5. Step 5: Solve for x
    x = 318,956,911.01/20,323.48
  6. Step 6: Final answer
    x = 15,694.01

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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.