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Finding the Fourth Proportional to 692,859.43, 956,135.92 and 386,932.58

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Solution

The fourth proportional to 692,859.43, 956,135.92 and 386,932.58 is: 533,961.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,859.43 : 956,135.92 = 386,932.58 : x
  2. Step 2: Convert to fraction form
    692,859.43/956,135.92 = 386,932.58/x
  3. Step 3: Cross multiply
    692,859.43x = 956,135.92 × 386,932.58
  4. Step 4: Simplify right side
    692,859.43x = 369,960,131,640.93
  5. Step 5: Solve for x
    x = 369,960,131,640.93/692,859.43
  6. Step 6: Final answer
    x = 533,961.31

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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.