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Finding the Fourth Proportional to 419,866.58, 579,394.94 and 238,554.56

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Solution

The fourth proportional to 419,866.58, 579,394.94 and 238,554.56 is: 329,193.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,866.58 : 579,394.94 = 238,554.56 : x
  2. Step 2: Convert to fraction form
    419,866.58/579,394.94 = 238,554.56/x
  3. Step 3: Cross multiply
    419,866.58x = 579,394.94 × 238,554.56
  4. Step 4: Simplify right side
    419,866.58x = 138,217,304,977.93
  5. Step 5: Solve for x
    x = 138,217,304,977.93/419,866.58
  6. Step 6: Final answer
    x = 329,193.40

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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.