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Finding the Fourth Proportional to 619,047.58, 928,833.81 and 338,236.78

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Solution

The fourth proportional to 619,047.58, 928,833.81 and 338,236.78 is: 507,498.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,047.58 : 928,833.81 = 338,236.78 : x
  2. Step 2: Convert to fraction form
    619,047.58/928,833.81 = 338,236.78/x
  3. Step 3: Cross multiply
    619,047.58x = 928,833.81 × 338,236.78
  4. Step 4: Simplify right side
    619,047.58x = 314,165,757,049.53
  5. Step 5: Solve for x
    x = 314,165,757,049.53/619,047.58
  6. Step 6: Final answer
    x = 507,498.56

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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.