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Finding the Fourth Proportional to 62,120.73, 85,704.74 and 40,623.06

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Solution

The fourth proportional to 62,120.73, 85,704.74 and 40,623.06 is: 56,045.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,120.73 : 85,704.74 = 40,623.06 : x
  2. Step 2: Convert to fraction form
    62,120.73/85,704.74 = 40,623.06/x
  3. Step 3: Cross multiply
    62,120.73x = 85,704.74 × 40,623.06
  4. Step 4: Simplify right side
    62,120.73x = 3,481,588,795.30
  5. Step 5: Solve for x
    x = 3,481,588,795.30/62,120.73
  6. Step 6: Final answer
    x = 56,045.52

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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.