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Finding the Fourth Proportional to 101,353.14, 139,879.50 and 58,911.68

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Solution

The fourth proportional to 101,353.14, 139,879.50 and 58,911.68 is: 81,305.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,353.14 : 139,879.50 = 58,911.68 : x
  2. Step 2: Convert to fraction form
    101,353.14/139,879.50 = 58,911.68/x
  3. Step 3: Cross multiply
    101,353.14x = 139,879.50 × 58,911.68
  4. Step 4: Simplify right side
    101,353.14x = 8,240,536,342.56
  5. Step 5: Solve for x
    x = 8,240,536,342.56/101,353.14
  6. Step 6: Final answer
    x = 81,305.19

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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.