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Finding the Fourth Proportional to 118,751.92, 178,072.48 and 68,846.32

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Solution

The fourth proportional to 118,751.92, 178,072.48 and 68,846.32 is: 103,237.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,751.92 : 178,072.48 = 68,846.32 : x
  2. Step 2: Convert to fraction form
    118,751.92/178,072.48 = 68,846.32/x
  3. Step 3: Cross multiply
    118,751.92x = 178,072.48 × 68,846.32
  4. Step 4: Simplify right side
    118,751.92x = 12,259,634,941.27
  5. Step 5: Solve for x
    x = 12,259,634,941.27/118,751.92
  6. Step 6: Final answer
    x = 103,237.36

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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.