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Finding the Fourth Proportional to 216,416.27, 324,640.71 and 64,601.35

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Solution

The fourth proportional to 216,416.27, 324,640.71 and 64,601.35 is: 96,906.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,416.27 : 324,640.71 = 64,601.35 : x
  2. Step 2: Convert to fraction form
    216,416.27/324,640.71 = 64,601.35/x
  3. Step 3: Cross multiply
    216,416.27x = 324,640.71 × 64,601.35
  4. Step 4: Simplify right side
    216,416.27x = 20,972,226,996.35
  5. Step 5: Solve for x
    x = 20,972,226,996.35/216,416.27
  6. Step 6: Final answer
    x = 96,906.89

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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.