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Finding the Fourth Proportional to 122,296.55, 168,697.55 and 76,902.53

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Solution

The fourth proportional to 122,296.55, 168,697.55 and 76,902.53 is: 106,080.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,296.55 : 168,697.55 = 76,902.53 : x
  2. Step 2: Convert to fraction form
    122,296.55/168,697.55 = 76,902.53/x
  3. Step 3: Cross multiply
    122,296.55x = 168,697.55 × 76,902.53
  4. Step 4: Simplify right side
    122,296.55x = 12,973,267,748.57
  5. Step 5: Solve for x
    x = 12,973,267,748.57/122,296.55
  6. Step 6: Final answer
    x = 106,080.41

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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.