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Finding the Fourth Proportional to 448,974.42, 619,559.87 and 255,355.97

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Solution

The fourth proportional to 448,974.42, 619,559.87 and 255,355.97 is: 352,377.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,974.42 : 619,559.87 = 255,355.97 : x
  2. Step 2: Convert to fraction form
    448,974.42/619,559.87 = 255,355.97/x
  3. Step 3: Cross multiply
    448,974.42x = 619,559.87 × 255,355.97
  4. Step 4: Simplify right side
    448,974.42x = 158,208,311,576.92
  5. Step 5: Solve for x
    x = 158,208,311,576.92/448,974.42
  6. Step 6: Final answer
    x = 352,377.12

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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.