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Finding the Fourth Proportional to 62,272.75, 93,409.94 and 20,719.75

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Solution

The fourth proportional to 62,272.75, 93,409.94 and 20,719.75 is: 31,079.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,272.75 : 93,409.94 = 20,719.75 : x
  2. Step 2: Convert to fraction form
    62,272.75/93,409.94 = 20,719.75/x
  3. Step 3: Cross multiply
    62,272.75x = 93,409.94 × 20,719.75
  4. Step 4: Simplify right side
    62,272.75x = 1,935,430,604.32
  5. Step 5: Solve for x
    x = 1,935,430,604.32/62,272.75
  6. Step 6: Final answer
    x = 31,079.90

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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.