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Finding the Fourth Proportional to 67,222.59, 100,848.44 and 20,474.25

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Solution

The fourth proportional to 67,222.59, 100,848.44 and 20,474.25 is: 30,715.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,222.59 : 100,848.44 = 20,474.25 : x
  2. Step 2: Convert to fraction form
    67,222.59/100,848.44 = 20,474.25/x
  3. Step 3: Cross multiply
    67,222.59x = 100,848.44 × 20,474.25
  4. Step 4: Simplify right side
    67,222.59x = 2,064,796,172.67
  5. Step 5: Solve for x
    x = 2,064,796,172.67/67,222.59
  6. Step 6: Final answer
    x = 30,715.81

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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.