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Finding the Fourth Proportional to 101,954.54, 140,665.52 and 58,918.35

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Solution

The fourth proportional to 101,954.54, 140,665.52 and 58,918.35 is: 81,288.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,954.54 : 140,665.52 = 58,918.35 : x
  2. Step 2: Convert to fraction form
    101,954.54/140,665.52 = 58,918.35/x
  3. Step 3: Cross multiply
    101,954.54x = 140,665.52 × 58,918.35
  4. Step 4: Simplify right side
    101,954.54x = 8,287,781,015.08
  5. Step 5: Solve for x
    x = 8,287,781,015.08/101,954.54
  6. Step 6: Final answer
    x = 81,288.98

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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.