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Finding the Fourth Proportional to 62,425.73, 93,638.64 and 20,872.73

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Solution

The fourth proportional to 62,425.73, 93,638.64 and 20,872.73 is: 31,309.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,425.73 : 93,638.64 = 20,872.73 : x
  2. Step 2: Convert to fraction form
    62,425.73/93,638.64 = 20,872.73/x
  3. Step 3: Cross multiply
    62,425.73x = 93,638.64 × 20,872.73
  4. Step 4: Simplify right side
    62,425.73x = 1,954,494,050.29
  5. Step 5: Solve for x
    x = 1,954,494,050.29/62,425.73
  6. Step 6: Final answer
    x = 31,309.11

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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.