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Finding the Fourth Proportional to 118,995.98, 178,540.64 and 52,389.36

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Solution

The fourth proportional to 118,995.98, 178,540.64 and 52,389.36 is: 78,604.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,995.98 : 178,540.64 = 52,389.36 : x
  2. Step 2: Convert to fraction form
    118,995.98/178,540.64 = 52,389.36/x
  3. Step 3: Cross multiply
    118,995.98x = 178,540.64 × 52,389.36
  4. Step 4: Simplify right side
    118,995.98x = 9,353,629,601.64
  5. Step 5: Solve for x
    x = 9,353,629,601.64/118,995.98
  6. Step 6: Final answer
    x = 78,604.59

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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.