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Finding the Fourth Proportional to 174,487.32, 261,755.46 and 85,744.32

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Solution

The fourth proportional to 174,487.32, 261,755.46 and 85,744.32 is: 128,628.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,487.32 : 261,755.46 = 85,744.32 : x
  2. Step 2: Convert to fraction form
    174,487.32/261,755.46 = 85,744.32/x
  3. Step 3: Cross multiply
    174,487.32x = 261,755.46 × 85,744.32
  4. Step 4: Simplify right side
    174,487.32x = 22,444,043,923.99
  5. Step 5: Solve for x
    x = 22,444,043,923.99/174,487.32
  6. Step 6: Final answer
    x = 128,628.51

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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.