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Finding the Fourth Proportional to 118,757.50, 163,879.09 and 65,041.37

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Solution

The fourth proportional to 118,757.50, 163,879.09 and 65,041.37 is: 89,753.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,757.50 : 163,879.09 = 65,041.37 : x
  2. Step 2: Convert to fraction form
    118,757.50/163,879.09 = 65,041.37/x
  3. Step 3: Cross multiply
    118,757.50x = 163,879.09 × 65,041.37
  4. Step 4: Simplify right side
    118,757.50x = 10,658,920,527.95
  5. Step 5: Solve for x
    x = 10,658,920,527.95/118,757.50
  6. Step 6: Final answer
    x = 89,753.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.