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Finding the Fourth Proportional to 119,236.40, 178,743.41 and 40,295.42

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Solution

The fourth proportional to 119,236.40, 178,743.41 and 40,295.42 is: 60,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,236.40 : 178,743.41 = 40,295.42 : x
  2. Step 2: Convert to fraction form
    119,236.40/178,743.41 = 40,295.42/x
  3. Step 3: Cross multiply
    119,236.40x = 178,743.41 × 40,295.42
  4. Step 4: Simplify right side
    119,236.40x = 7,202,539,682.99
  5. Step 5: Solve for x
    x = 7,202,539,682.99/119,236.40
  6. Step 6: Final answer
    x = 60,405.55

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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.