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Finding the Fourth Proportional to 72,835.79, 100,515.26 and 41,005.82

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Solution

The fourth proportional to 72,835.79, 100,515.26 and 41,005.82 is: 56,589.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,835.79 : 100,515.26 = 41,005.82 : x
  2. Step 2: Convert to fraction form
    72,835.79/100,515.26 = 41,005.82/x
  3. Step 3: Cross multiply
    72,835.79x = 100,515.26 × 41,005.82
  4. Step 4: Simplify right side
    72,835.79x = 4,121,711,012.62
  5. Step 5: Solve for x
    x = 4,121,711,012.62/72,835.79
  6. Step 6: Final answer
    x = 56,589.09

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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.