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Finding the Fourth Proportional to 110,857.40, 166,310.70 and 31,965.50

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Solution

The fourth proportional to 110,857.40, 166,310.70 and 31,965.50 is: 47,955.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,857.40 : 166,310.70 = 31,965.50 : x
  2. Step 2: Convert to fraction form
    110,857.40/166,310.70 = 31,965.50/x
  3. Step 3: Cross multiply
    110,857.40x = 166,310.70 × 31,965.50
  4. Step 4: Simplify right side
    110,857.40x = 5,316,204,680.85
  5. Step 5: Solve for x
    x = 5,316,204,680.85/110,857.40
  6. Step 6: Final answer
    x = 47,955.34

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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.