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Finding the Fourth Proportional to 221,059.72, 331,310.40 and 94,549.60

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Solution

The fourth proportional to 221,059.72, 331,310.40 and 94,549.60 is: 141,704.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,059.72 : 331,310.40 = 94,549.60 : x
  2. Step 2: Convert to fraction form
    221,059.72/331,310.40 = 94,549.60/x
  3. Step 3: Cross multiply
    221,059.72x = 331,310.40 × 94,549.60
  4. Step 4: Simplify right side
    221,059.72x = 31,325,265,795.84
  5. Step 5: Solve for x
    x = 31,325,265,795.84/221,059.72
  6. Step 6: Final answer
    x = 141,704.99

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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.