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Finding the Fourth Proportional to 28,148.31, 38,843.80 and 16,815.27

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Solution

The fourth proportional to 28,148.31, 38,843.80 and 16,815.27 is: 23,204.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.31 : 38,843.80 = 16,815.27 : x
  2. Step 2: Convert to fraction form
    28,148.31/38,843.80 = 16,815.27/x
  3. Step 3: Cross multiply
    28,148.31x = 38,843.80 × 16,815.27
  4. Step 4: Simplify right side
    28,148.31x = 653,168,797.12
  5. Step 5: Solve for x
    x = 653,168,797.12/28,148.31
  6. Step 6: Final answer
    x = 23,204.54

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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.