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Finding the Fourth Proportional to 216,129.20, 324,210.20 and 58,355.37

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Solution

The fourth proportional to 216,129.20, 324,210.20 and 58,355.37 is: 87,537.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,129.20 : 324,210.20 = 58,355.37 : x
  2. Step 2: Convert to fraction form
    216,129.20/324,210.20 = 58,355.37/x
  3. Step 3: Cross multiply
    216,129.20x = 324,210.20 × 58,355.37
  4. Step 4: Simplify right side
    216,129.20x = 18,919,405,887.00
  5. Step 5: Solve for x
    x = 18,919,405,887.00/216,129.20
  6. Step 6: Final answer
    x = 87,537.48

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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.