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Finding the Fourth Proportional to 104,606.64, 156,712.32 and 80,954.64

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Solution

The fourth proportional to 104,606.64, 156,712.32 and 80,954.64 is: 121,279.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,606.64 : 156,712.32 = 80,954.64 : x
  2. Step 2: Convert to fraction form
    104,606.64/156,712.32 = 80,954.64/x
  3. Step 3: Cross multiply
    104,606.64x = 156,712.32 × 80,954.64
  4. Step 4: Simplify right side
    104,606.64x = 12,686,589,449.16
  5. Step 5: Solve for x
    x = 12,686,589,449.16/104,606.64
  6. Step 6: Final answer
    x = 121,279.01

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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.