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Finding the Fourth Proportional to 101,372.48, 139,889.92 and 58,927.68

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Solution

The fourth proportional to 101,372.48, 139,889.92 and 58,927.68 is: 81,317.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,372.48 : 139,889.92 = 58,927.68 : x
  2. Step 2: Convert to fraction form
    101,372.48/139,889.92 = 58,927.68/x
  3. Step 3: Cross multiply
    101,372.48x = 139,889.92 × 58,927.68
  4. Step 4: Simplify right side
    101,372.48x = 8,243,388,440.99
  5. Step 5: Solve for x
    x = 8,243,388,440.99/101,372.48
  6. Step 6: Final answer
    x = 81,317.81

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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.