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Finding the Fourth Proportional to 171,806.15, 257,228.39 and 129,554.00

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Solution

The fourth proportional to 171,806.15, 257,228.39 and 129,554.00 is: 193,968.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,806.15 : 257,228.39 = 129,554.00 : x
  2. Step 2: Convert to fraction form
    171,806.15/257,228.39 = 129,554.00/x
  3. Step 3: Cross multiply
    171,806.15x = 257,228.39 × 129,554.00
  4. Step 4: Simplify right side
    171,806.15x = 33,324,965,875.80
  5. Step 5: Solve for x
    x = 33,324,965,875.80/171,806.15
  6. Step 6: Final answer
    x = 193,968.41

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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.