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Finding the Fourth Proportional to 122,956.60, 184,434.90 and 115,083.40

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Solution

The fourth proportional to 122,956.60, 184,434.90 and 115,083.40 is: 172,625.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,956.60 : 184,434.90 = 115,083.40 : x
  2. Step 2: Convert to fraction form
    122,956.60/184,434.90 = 115,083.40/x
  3. Step 3: Cross multiply
    122,956.60x = 184,434.90 × 115,083.40
  4. Step 4: Simplify right side
    122,956.60x = 21,225,395,370.66
  5. Step 5: Solve for x
    x = 21,225,395,370.66/122,956.60
  6. Step 6: Final answer
    x = 172,625.10

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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.