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Finding the Fourth Proportional to 110,680.40, 166,020.60 and 51,631.40

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Solution

The fourth proportional to 110,680.40, 166,020.60 and 51,631.40 is: 77,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,680.40 : 166,020.60 = 51,631.40 : x
  2. Step 2: Convert to fraction form
    110,680.40/166,020.60 = 51,631.40/x
  3. Step 3: Cross multiply
    110,680.40x = 166,020.60 × 51,631.40
  4. Step 4: Simplify right side
    110,680.40x = 8,571,876,006.84
  5. Step 5: Solve for x
    x = 8,571,876,006.84/110,680.40
  6. Step 6: Final answer
    x = 77,447.10

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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.