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Finding the Fourth Proportional to 122,078.83, 183,170.76 and 65,907.79

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Solution

The fourth proportional to 122,078.83, 183,170.76 and 65,907.79 is: 98,890.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,078.83 : 183,170.76 = 65,907.79 : x
  2. Step 2: Convert to fraction form
    122,078.83/183,170.76 = 65,907.79/x
  3. Step 3: Cross multiply
    122,078.83x = 183,170.76 × 65,907.79
  4. Step 4: Simplify right side
    122,078.83x = 12,072,379,984.22
  5. Step 5: Solve for x
    x = 12,072,379,984.22/122,078.83
  6. Step 6: Final answer
    x = 98,890.04

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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.