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Finding the Fourth Proportional to 122,721.60, 184,082.40 and 63,672.60

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Solution

The fourth proportional to 122,721.60, 184,082.40 and 63,672.60 is: 95,508.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,721.60 : 184,082.40 = 63,672.60 : x
  2. Step 2: Convert to fraction form
    122,721.60/184,082.40 = 63,672.60/x
  3. Step 3: Cross multiply
    122,721.60x = 184,082.40 × 63,672.60
  4. Step 4: Simplify right side
    122,721.60x = 11,721,005,022.24
  5. Step 5: Solve for x
    x = 11,721,005,022.24/122,721.60
  6. Step 6: Final answer
    x = 95,508.90

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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.