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Finding the Fourth Proportional to 44,771.76, 67,172.24 and 21,400

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Solution

The fourth proportional to 44,771.76, 67,172.24 and 21,400 is: 32,106.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,771.76 : 67,172.24 = 21,400 : x
  2. Step 2: Convert to fraction form
    44,771.76/67,172.24 = 21,400/x
  3. Step 3: Cross multiply
    44,771.76x = 67,172.24 × 21,400
  4. Step 4: Simplify right side
    44,771.76x = 1,437,485,936
  5. Step 5: Solve for x
    x = 1,437,485,936/44,771.76
  6. Step 6: Final answer
    x = 32,106.98

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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.