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Finding the Fourth Proportional to 236,999.81, 327,059.71 and 129,569.81

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Solution

The fourth proportional to 236,999.81, 327,059.71 and 129,569.81 is: 178,806.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,999.81 : 327,059.71 = 129,569.81 : x
  2. Step 2: Convert to fraction form
    236,999.81/327,059.71 = 129,569.81/x
  3. Step 3: Cross multiply
    236,999.81x = 327,059.71 × 129,569.81
  4. Step 4: Simplify right side
    236,999.81x = 42,377,063,835.51
  5. Step 5: Solve for x
    x = 42,377,063,835.51/236,999.81
  6. Step 6: Final answer
    x = 178,806.32

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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.