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Finding the Fourth Proportional to 118,733.80, 178,100.70 and 107,069.80

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Solution

The fourth proportional to 118,733.80, 178,100.70 and 107,069.80 is: 160,604.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,733.80 : 178,100.70 = 107,069.80 : x
  2. Step 2: Convert to fraction form
    118,733.80/178,100.70 = 107,069.80/x
  3. Step 3: Cross multiply
    118,733.80x = 178,100.70 × 107,069.80
  4. Step 4: Simplify right side
    118,733.80x = 19,069,206,328.86
  5. Step 5: Solve for x
    x = 19,069,206,328.86/118,733.80
  6. Step 6: Final answer
    x = 160,604.70

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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.