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Finding the Fourth Proportional to 171,931.60, 258,091.80 and 132,662.80

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Solution

The fourth proportional to 171,931.60, 258,091.80 and 132,662.80 is: 199,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,931.60 : 258,091.80 = 132,662.80 : x
  2. Step 2: Convert to fraction form
    171,931.60/258,091.80 = 132,662.80/x
  3. Step 3: Cross multiply
    171,931.60x = 258,091.80 × 132,662.80
  4. Step 4: Simplify right side
    171,931.60x = 34,239,180,845.04
  5. Step 5: Solve for x
    x = 34,239,180,845.04/171,931.60
  6. Step 6: Final answer
    x = 199,144.20

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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.