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Finding the Fourth Proportional to 376,200.78, 519,150.20 and 212,855.54

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Solution

The fourth proportional to 376,200.78, 519,150.20 and 212,855.54 is: 293,736.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,200.78 : 519,150.20 = 212,855.54 : x
  2. Step 2: Convert to fraction form
    376,200.78/519,150.20 = 212,855.54/x
  3. Step 3: Cross multiply
    376,200.78x = 519,150.20 × 212,855.54
  4. Step 4: Simplify right side
    376,200.78x = 110,503,996,162.11
  5. Step 5: Solve for x
    x = 110,503,996,162.11/376,200.78
  6. Step 6: Final answer
    x = 293,736.75

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1.5x scale

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.