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Finding the Fourth Proportional to 185,728.56, 256,305.60 and 100,845.60

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Solution

The fourth proportional to 185,728.56, 256,305.60 and 100,845.60 is: 139,167.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,728.56 : 256,305.60 = 100,845.60 : x
  2. Step 2: Convert to fraction form
    185,728.56/256,305.60 = 100,845.60/x
  3. Step 3: Cross multiply
    185,728.56x = 256,305.60 × 100,845.60
  4. Step 4: Simplify right side
    185,728.56x = 25,847,292,015.36
  5. Step 5: Solve for x
    x = 25,847,292,015.36/185,728.56
  6. Step 6: Final answer
    x = 139,167.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.