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Finding the Fourth Proportional to 64,910.80, 96,896.64 and 57,037.60

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Solution

The fourth proportional to 64,910.80, 96,896.64 and 57,037.60 is: 85,143.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,910.80 : 96,896.64 = 57,037.60 : x
  2. Step 2: Convert to fraction form
    64,910.80/96,896.64 = 57,037.60/x
  3. Step 3: Cross multiply
    64,910.80x = 96,896.64 × 57,037.60
  4. Step 4: Simplify right side
    64,910.80x = 5,526,751,793.66
  5. Step 5: Solve for x
    x = 5,526,751,793.66/64,910.80
  6. Step 6: Final answer
    x = 85,143.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.