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Finding the Fourth Proportional to 74,078.96, 111,087.65 and 45,956.77

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Solution

The fourth proportional to 74,078.96, 111,087.65 and 45,956.77 is: 68,916.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,078.96 : 111,087.65 = 45,956.77 : x
  2. Step 2: Convert to fraction form
    74,078.96/111,087.65 = 45,956.77/x
  3. Step 3: Cross multiply
    74,078.96x = 111,087.65 × 45,956.77
  4. Step 4: Simplify right side
    74,078.96x = 5,105,229,418.06
  5. Step 5: Solve for x
    x = 5,105,229,418.06/74,078.96
  6. Step 6: Final answer
    x = 68,916.06

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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.