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Finding the Fourth Proportional to 455,843.90, 683,766.16 and 118,883.70

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Solution

The fourth proportional to 455,843.90, 683,766.16 and 118,883.70 is: 178,325.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,843.90 : 683,766.16 = 118,883.70 : x
  2. Step 2: Convert to fraction form
    455,843.90/683,766.16 = 118,883.70/x
  3. Step 3: Cross multiply
    455,843.90x = 683,766.16 × 118,883.70
  4. Step 4: Simplify right side
    455,843.90x = 81,288,650,738.38
  5. Step 5: Solve for x
    x = 81,288,650,738.38/455,843.90
  6. Step 6: Final answer
    x = 178,325.63

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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.