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Finding the Fourth Proportional to 486,554.85, 671,446.67 and 271,694.25

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Solution

The fourth proportional to 486,554.85, 671,446.67 and 271,694.25 is: 374,938.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,554.85 : 671,446.67 = 271,694.25 : x
  2. Step 2: Convert to fraction form
    486,554.85/671,446.67 = 271,694.25/x
  3. Step 3: Cross multiply
    486,554.85x = 671,446.67 × 271,694.25
  4. Step 4: Simplify right side
    486,554.85x = 182,428,198,062.18
  5. Step 5: Solve for x
    x = 182,428,198,062.18/486,554.85
  6. Step 6: Final answer
    x = 374,938.61

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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.