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Finding the Fourth Proportional to 118,620.90, 177,672.15 and 92,117.70

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Solution

The fourth proportional to 118,620.90, 177,672.15 and 92,117.70 is: 137,975.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,620.90 : 177,672.15 = 92,117.70 : x
  2. Step 2: Convert to fraction form
    118,620.90/177,672.15 = 92,117.70/x
  3. Step 3: Cross multiply
    118,620.90x = 177,672.15 × 92,117.70
  4. Step 4: Simplify right side
    118,620.90x = 16,366,749,812.06
  5. Step 5: Solve for x
    x = 16,366,749,812.06/118,620.90
  6. Step 6: Final answer
    x = 137,975.26

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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.