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Finding the Fourth Proportional to 134,679.43, 185,858.91 and 74,252.42

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Solution

The fourth proportional to 134,679.43, 185,858.91 and 74,252.42 is: 102,469.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,679.43 : 185,858.91 = 74,252.42 : x
  2. Step 2: Convert to fraction form
    134,679.43/185,858.91 = 74,252.42/x
  3. Step 3: Cross multiply
    134,679.43x = 185,858.91 × 74,252.42
  4. Step 4: Simplify right side
    134,679.43x = 13,800,472,545.51
  5. Step 5: Solve for x
    x = 13,800,472,545.51/134,679.43
  6. Step 6: Final answer
    x = 102,469.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.