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Finding the Fourth Proportional to 118,911.22, 178,391.86 and 44,031.98

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Solution

The fourth proportional to 118,911.22, 178,391.86 and 44,031.98 is: 66,057.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,911.22 : 178,391.86 = 44,031.98 : x
  2. Step 2: Convert to fraction form
    118,911.22/178,391.86 = 44,031.98/x
  3. Step 3: Cross multiply
    118,911.22x = 178,391.86 × 44,031.98
  4. Step 4: Simplify right side
    118,911.22x = 7,854,946,811.68
  5. Step 5: Solve for x
    x = 7,854,946,811.68/118,911.22
  6. Step 6: Final answer
    x = 66,057.24

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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.