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Finding the Fourth Proportional to 70,362.44, 105,556.94 and 28,245.81

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Solution

The fourth proportional to 70,362.44, 105,556.94 and 28,245.81 is: 42,374.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,362.44 : 105,556.94 = 28,245.81 : x
  2. Step 2: Convert to fraction form
    70,362.44/105,556.94 = 28,245.81/x
  3. Step 3: Cross multiply
    70,362.44x = 105,556.94 × 28,245.81
  4. Step 4: Simplify right side
    70,362.44x = 2,981,541,631.95
  5. Step 5: Solve for x
    x = 2,981,541,631.95/70,362.44
  6. Step 6: Final answer
    x = 42,374.05

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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.