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Finding the Fourth Proportional to 118,989.97, 178,531.68 and 52,383.36

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Solution

The fourth proportional to 118,989.97, 178,531.68 and 52,383.36 is: 78,595.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,989.97 : 178,531.68 = 52,383.36 : x
  2. Step 2: Convert to fraction form
    118,989.97/178,531.68 = 52,383.36/x
  3. Step 3: Cross multiply
    118,989.97x = 178,531.68 × 52,383.36
  4. Step 4: Simplify right side
    118,989.97x = 9,352,089,836.12
  5. Step 5: Solve for x
    x = 9,352,089,836.12/118,989.97
  6. Step 6: Final answer
    x = 78,595.62

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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.