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Finding the Fourth Proportional to 331,689.88, 457,726.96 and 186,495.79

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Solution

The fourth proportional to 331,689.88, 457,726.96 and 186,495.79 is: 257,361.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,689.88 : 457,726.96 = 186,495.79 : x
  2. Step 2: Convert to fraction form
    331,689.88/457,726.96 = 186,495.79/x
  3. Step 3: Cross multiply
    331,689.88x = 457,726.96 × 186,495.79
  4. Step 4: Simplify right side
    331,689.88x = 85,364,149,398.94
  5. Step 5: Solve for x
    x = 85,364,149,398.94/331,689.88
  6. Step 6: Final answer
    x = 257,361.33

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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.