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Finding the Fourth Proportional to 122,956.67, 184,604.78 and 84,916.64

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Solution

The fourth proportional to 122,956.67, 184,604.78 and 84,916.64 is: 127,492.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,956.67 : 184,604.78 = 84,916.64 : x
  2. Step 2: Convert to fraction form
    122,956.67/184,604.78 = 84,916.64/x
  3. Step 3: Cross multiply
    122,956.67x = 184,604.78 × 84,916.64
  4. Step 4: Simplify right side
    122,956.67x = 15,676,016,934.81
  5. Step 5: Solve for x
    x = 15,676,016,934.81/122,956.67
  6. Step 6: Final answer
    x = 127,492.21

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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.