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Finding the Fourth Proportional to 115,072.80, 172,676.16 and 48,508.80

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Solution

The fourth proportional to 115,072.80, 172,676.16 and 48,508.80 is: 72,791.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,072.80 : 172,676.16 = 48,508.80 : x
  2. Step 2: Convert to fraction form
    115,072.80/172,676.16 = 48,508.80/x
  3. Step 3: Cross multiply
    115,072.80x = 172,676.16 × 48,508.80
  4. Step 4: Simplify right side
    115,072.80x = 8,376,313,310.21
  5. Step 5: Solve for x
    x = 8,376,313,310.21/115,072.80
  6. Step 6: Final answer
    x = 72,791.43

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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.