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Finding the Fourth Proportional to 171,691.60, 257,537.40 and 115,704.40

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Solution

The fourth proportional to 171,691.60, 257,537.40 and 115,704.40 is: 173,556.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,691.60 : 257,537.40 = 115,704.40 : x
  2. Step 2: Convert to fraction form
    171,691.60/257,537.40 = 115,704.40/x
  3. Step 3: Cross multiply
    171,691.60x = 257,537.40 × 115,704.40
  4. Step 4: Simplify right side
    171,691.60x = 29,798,210,344.56
  5. Step 5: Solve for x
    x = 29,798,210,344.56/171,691.60
  6. Step 6: Final answer
    x = 173,556.60

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1.5x scale

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.