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Finding the Fourth Proportional to 62,940.30, 94,396.74 and 20,810.43

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Solution

The fourth proportional to 62,940.30, 94,396.74 and 20,810.43 is: 31,211.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,940.30 : 94,396.74 = 20,810.43 : x
  2. Step 2: Convert to fraction form
    62,940.30/94,396.74 = 20,810.43/x
  3. Step 3: Cross multiply
    62,940.30x = 94,396.74 × 20,810.43
  4. Step 4: Simplify right side
    62,940.30x = 1,964,436,750.00
  5. Step 5: Solve for x
    x = 1,964,436,750.00/62,940.30
  6. Step 6: Final answer
    x = 31,211.11

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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.