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Finding the Fourth Proportional to 185,846.70, 278,735.91 and 84,620.76

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Solution

The fourth proportional to 185,846.70, 278,735.91 and 84,620.76 is: 126,915.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,846.70 : 278,735.91 = 84,620.76 : x
  2. Step 2: Convert to fraction form
    185,846.70/278,735.91 = 84,620.76/x
  3. Step 3: Cross multiply
    185,846.70x = 278,735.91 × 84,620.76
  4. Step 4: Simplify right side
    185,846.70x = 23,586,844,543.49
  5. Step 5: Solve for x
    x = 23,586,844,543.49/185,846.70
  6. Step 6: Final answer
    x = 126,915.60

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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.