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Finding the Fourth Proportional to 123,794.88, 170,836.80 and 67,207.68

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Solution

The fourth proportional to 123,794.88, 170,836.80 and 67,207.68 is: 92,746.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,794.88 : 170,836.80 = 67,207.68 : x
  2. Step 2: Convert to fraction form
    123,794.88/170,836.80 = 67,207.68/x
  3. Step 3: Cross multiply
    123,794.88x = 170,836.80 × 67,207.68
  4. Step 4: Simplify right side
    123,794.88x = 11,481,544,986.62
  5. Step 5: Solve for x
    x = 11,481,544,986.62/123,794.88
  6. Step 6: Final answer
    x = 92,746.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.