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Finding the Fourth Proportional to 114,555.20, 171,905.70 and 67,170.20

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Solution

The fourth proportional to 114,555.20, 171,905.70 and 67,170.20 is: 100,798.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,555.20 : 171,905.70 = 67,170.20 : x
  2. Step 2: Convert to fraction form
    114,555.20/171,905.70 = 67,170.20/x
  3. Step 3: Cross multiply
    114,555.20x = 171,905.70 × 67,170.20
  4. Step 4: Simplify right side
    114,555.20x = 11,546,940,250.14
  5. Step 5: Solve for x
    x = 11,546,940,250.14/114,555.20
  6. Step 6: Final answer
    x = 100,798.05

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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.