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Finding the Fourth Proportional to 170,220.44, 255,371.16 and 85,773.08

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Solution

The fourth proportional to 170,220.44, 255,371.16 and 85,773.08 is: 128,680.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,220.44 : 255,371.16 = 85,773.08 : x
  2. Step 2: Convert to fraction form
    170,220.44/255,371.16 = 85,773.08/x
  3. Step 3: Cross multiply
    170,220.44x = 255,371.16 × 85,773.08
  4. Step 4: Simplify right side
    170,220.44x = 21,903,970,936.37
  5. Step 5: Solve for x
    x = 21,903,970,936.37/170,220.44
  6. Step 6: Final answer
    x = 128,680.03

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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.