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Finding the Fourth Proportional to 73,111.80, 109,716.30 and 41,521.80

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Solution

The fourth proportional to 73,111.80, 109,716.30 and 41,521.80 is: 62,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,111.80 : 109,716.30 = 41,521.80 : x
  2. Step 2: Convert to fraction form
    73,111.80/109,716.30 = 41,521.80/x
  3. Step 3: Cross multiply
    73,111.80x = 109,716.30 × 41,521.80
  4. Step 4: Simplify right side
    73,111.80x = 4,555,618,265.34
  5. Step 5: Solve for x
    x = 4,555,618,265.34/73,111.80
  6. Step 6: Final answer
    x = 62,310.30

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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.