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Finding the Fourth Proportional to 168,664.80, 253,227.60 and 85,617.12

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Solution

The fourth proportional to 168,664.80, 253,227.60 and 85,617.12 is: 128,542.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,664.80 : 253,227.60 = 85,617.12 : x
  2. Step 2: Convert to fraction form
    168,664.80/253,227.60 = 85,617.12/x
  3. Step 3: Cross multiply
    168,664.80x = 253,227.60 × 85,617.12
  4. Step 4: Simplify right side
    168,664.80x = 21,680,617,816.51
  5. Step 5: Solve for x
    x = 21,680,617,816.51/168,664.80
  6. Step 6: Final answer
    x = 128,542.63

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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.