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Finding the Fourth Proportional to 171,785.86, 257,554.17 and 115,486.29

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Solution

The fourth proportional to 171,785.86, 257,554.17 and 115,486.29 is: 173,145.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,785.86 : 257,554.17 = 115,486.29 : x
  2. Step 2: Convert to fraction form
    171,785.86/257,554.17 = 115,486.29/x
  3. Step 3: Cross multiply
    171,785.86x = 257,554.17 × 115,486.29
  4. Step 4: Simplify right side
    171,785.86x = 29,743,975,567.33
  5. Step 5: Solve for x
    x = 29,743,975,567.33/171,785.86
  6. Step 6: Final answer
    x = 173,145.66

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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.