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Finding the Fourth Proportional to 28,961.40, 43,442.10 and 17,297.40

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Solution

The fourth proportional to 28,961.40, 43,442.10 and 17,297.40 is: 25,946.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,961.40 : 43,442.10 = 17,297.40 : x
  2. Step 2: Convert to fraction form
    28,961.40/43,442.10 = 17,297.40/x
  3. Step 3: Cross multiply
    28,961.40x = 43,442.10 × 17,297.40
  4. Step 4: Simplify right side
    28,961.40x = 751,435,380.54
  5. Step 5: Solve for x
    x = 751,435,380.54/28,961.40
  6. Step 6: Final answer
    x = 25,946.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.