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Finding the Fourth Proportional to 212,310.74, 318,483.39 and 60,519.43

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Solution

The fourth proportional to 212,310.74, 318,483.39 and 60,519.43 is: 90,784.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,310.74 : 318,483.39 = 60,519.43 : x
  2. Step 2: Convert to fraction form
    212,310.74/318,483.39 = 60,519.43/x
  3. Step 3: Cross multiply
    212,310.74x = 318,483.39 × 60,519.43
  4. Step 4: Simplify right side
    212,310.74x = 19,274,431,634.85
  5. Step 5: Solve for x
    x = 19,274,431,634.85/212,310.74
  6. Step 6: Final answer
    x = 90,784.07

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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.