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Finding the Fourth Proportional to 79,723.51, 119,585.41 and 74,851.97

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Solution

The fourth proportional to 79,723.51, 119,585.41 and 74,851.97 is: 112,278.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,723.51 : 119,585.41 = 74,851.97 : x
  2. Step 2: Convert to fraction form
    79,723.51/119,585.41 = 74,851.97/x
  3. Step 3: Cross multiply
    79,723.51x = 119,585.41 × 74,851.97
  4. Step 4: Simplify right side
    79,723.51x = 8,951,203,017.40
  5. Step 5: Solve for x
    x = 8,951,203,017.40/79,723.51
  6. Step 6: Final answer
    x = 112,278.09

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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.