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Finding the Fourth Proportional to 83,595, 125,392.50 and 28,191

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Solution

The fourth proportional to 83,595, 125,392.50 and 28,191 is: 42,286.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,595 : 125,392.50 = 28,191 : x
  2. Step 2: Convert to fraction form
    83,595/125,392.50 = 28,191/x
  3. Step 3: Cross multiply
    83,595x = 125,392.50 × 28,191
  4. Step 4: Simplify right side
    83,595x = 3,534,939,967.50
  5. Step 5: Solve for x
    x = 3,534,939,967.50/83,595
  6. Step 6: Final answer
    x = 42,286.50

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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.