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Finding the Fourth Proportional to 171,024.88, 256,541.70 and 81,046.48

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Solution

The fourth proportional to 171,024.88, 256,541.70 and 81,046.48 is: 121,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,024.88 : 256,541.70 = 81,046.48 : x
  2. Step 2: Convert to fraction form
    171,024.88/256,541.70 = 81,046.48/x
  3. Step 3: Cross multiply
    171,024.88x = 256,541.70 × 81,046.48
  4. Step 4: Simplify right side
    171,024.88x = 20,791,801,758.22
  5. Step 5: Solve for x
    x = 20,791,801,758.22/171,024.88
  6. Step 6: Final answer
    x = 121,571.80

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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.