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Finding the Fourth Proportional to 28,175.70, 38,876.07 and 16,843.32

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Solution

The fourth proportional to 28,175.70, 38,876.07 and 16,843.32 is: 23,239.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.70 : 38,876.07 = 16,843.32 : x
  2. Step 2: Convert to fraction form
    28,175.70/38,876.07 = 16,843.32/x
  3. Step 3: Cross multiply
    28,175.70x = 38,876.07 × 16,843.32
  4. Step 4: Simplify right side
    28,175.70x = 654,802,087.35
  5. Step 5: Solve for x
    x = 654,802,087.35/28,175.70
  6. Step 6: Final answer
    x = 23,239.96

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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.