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Finding the Fourth Proportional to 171,178.21, 256,877.48 and 92,346.85

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Solution

The fourth proportional to 171,178.21, 256,877.48 and 92,346.85 is: 138,579.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,178.21 : 256,877.48 = 92,346.85 : x
  2. Step 2: Convert to fraction form
    171,178.21/256,877.48 = 92,346.85/x
  3. Step 3: Cross multiply
    171,178.21x = 256,877.48 × 92,346.85
  4. Step 4: Simplify right side
    171,178.21x = 23,721,826,146.45
  5. Step 5: Solve for x
    x = 23,721,826,146.45/171,178.21
  6. Step 6: Final answer
    x = 138,579.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.