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Finding the Fourth Proportional to 133,696.40, 184,584.92 and 86,032.58

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Solution

The fourth proportional to 133,696.40, 184,584.92 and 86,032.58 is: 118,778.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,696.40 : 184,584.92 = 86,032.58 : x
  2. Step 2: Convert to fraction form
    133,696.40/184,584.92 = 86,032.58/x
  3. Step 3: Cross multiply
    133,696.40x = 184,584.92 × 86,032.58
  4. Step 4: Simplify right side
    133,696.40x = 15,880,316,896.69
  5. Step 5: Solve for x
    x = 15,880,316,896.69/133,696.40
  6. Step 6: Final answer
    x = 118,778.94

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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.