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Finding the Fourth Proportional to 132,553.60, 198,700.80 and 118,556.80

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Solution

The fourth proportional to 132,553.60, 198,700.80 and 118,556.80 is: 177,719.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,553.60 : 198,700.80 = 118,556.80 : x
  2. Step 2: Convert to fraction form
    132,553.60/198,700.80 = 118,556.80/x
  3. Step 3: Cross multiply
    132,553.60x = 198,700.80 × 118,556.80
  4. Step 4: Simplify right side
    132,553.60x = 23,557,331,005.44
  5. Step 5: Solve for x
    x = 23,557,331,005.44/132,553.60
  6. Step 6: Final answer
    x = 177,719.28

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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.