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Finding the Fourth Proportional to 171,201.53, 256,802.05 and 68,665.12

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Solution

The fourth proportional to 171,201.53, 256,802.05 and 68,665.12 is: 102,997.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,201.53 : 256,802.05 = 68,665.12 : x
  2. Step 2: Convert to fraction form
    171,201.53/256,802.05 = 68,665.12/x
  3. Step 3: Cross multiply
    171,201.53x = 256,802.05 × 68,665.12
  4. Step 4: Simplify right side
    171,201.53x = 17,633,342,765.83
  5. Step 5: Solve for x
    x = 17,633,342,765.83/171,201.53
  6. Step 6: Final answer
    x = 102,997.58

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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.