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Finding the Fourth Proportional to 115,211.80, 172,817.70 and 32,105.80

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Solution

The fourth proportional to 115,211.80, 172,817.70 and 32,105.80 is: 48,158.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,211.80 : 172,817.70 = 32,105.80 : x
  2. Step 2: Convert to fraction form
    115,211.80/172,817.70 = 32,105.80/x
  3. Step 3: Cross multiply
    115,211.80x = 172,817.70 × 32,105.80
  4. Step 4: Simplify right side
    115,211.80x = 5,548,450,512.66
  5. Step 5: Solve for x
    x = 5,548,450,512.66/115,211.80
  6. Step 6: Final answer
    x = 48,158.70

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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.