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Finding the Fourth Proportional to 216,573.55, 324,906.68 and 64,782.54

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Solution

The fourth proportional to 216,573.55, 324,906.68 and 64,782.54 is: 97,187.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,573.55 : 324,906.68 = 64,782.54 : x
  2. Step 2: Convert to fraction form
    216,573.55/324,906.68 = 64,782.54/x
  3. Step 3: Cross multiply
    216,573.55x = 324,906.68 × 64,782.54
  4. Step 4: Simplify right side
    216,573.55x = 21,048,279,993.37
  5. Step 5: Solve for x
    x = 21,048,279,993.37/216,573.55
  6. Step 6: Final answer
    x = 97,187.68

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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.