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Finding the Fourth Proportional to 115,388.55, 173,073.11 and 36,491.31

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Solution

The fourth proportional to 115,388.55, 173,073.11 and 36,491.31 is: 54,733.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,388.55 : 173,073.11 = 36,491.31 : x
  2. Step 2: Convert to fraction form
    115,388.55/173,073.11 = 36,491.31/x
  3. Step 3: Cross multiply
    115,388.55x = 173,073.11 × 36,491.31
  4. Step 4: Simplify right side
    115,388.55x = 6,315,664,327.22
  5. Step 5: Solve for x
    x = 6,315,664,327.22/115,388.55
  6. Step 6: Final answer
    x = 54,733.89

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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.