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Finding the Fourth Proportional to 339,231.78, 511,286.01 and 292,411.96

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Solution

The fourth proportional to 339,231.78, 511,286.01 and 292,411.96 is: 440,719.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,231.78 : 511,286.01 = 292,411.96 : x
  2. Step 2: Convert to fraction form
    339,231.78/511,286.01 = 292,411.96/x
  3. Step 3: Cross multiply
    339,231.78x = 511,286.01 × 292,411.96
  4. Step 4: Simplify right side
    339,231.78x = 149,506,144,304.68
  5. Step 5: Solve for x
    x = 149,506,144,304.68/339,231.78
  6. Step 6: Final answer
    x = 440,719.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.