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Finding the Fourth Proportional to 273,131.29, 376,913.91 and 158,402.80

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Solution

The fourth proportional to 273,131.29, 376,913.91 and 158,402.80 is: 218,591.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,131.29 : 376,913.91 = 158,402.80 : x
  2. Step 2: Convert to fraction form
    273,131.29/376,913.91 = 158,402.80/x
  3. Step 3: Cross multiply
    273,131.29x = 376,913.91 × 158,402.80
  4. Step 4: Simplify right side
    273,131.29x = 59,704,218,702.95
  5. Step 5: Solve for x
    x = 59,704,218,702.95/273,131.29
  6. Step 6: Final answer
    x = 218,591.65

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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.