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Finding the Fourth Proportional to 171,131.60, 256,620.60 and 65,915.60

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Solution

The fourth proportional to 171,131.60, 256,620.60 and 65,915.60 is: 98,843.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,131.60 : 256,620.60 = 65,915.60 : x
  2. Step 2: Convert to fraction form
    171,131.60/256,620.60 = 65,915.60/x
  3. Step 3: Cross multiply
    171,131.60x = 256,620.60 × 65,915.60
  4. Step 4: Simplify right side
    171,131.60x = 16,915,300,821.36
  5. Step 5: Solve for x
    x = 16,915,300,821.36/171,131.60
  6. Step 6: Final answer
    x = 98,843.82

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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.