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Finding the Fourth Proportional to 64,921.56, 89,591.38 and 36,239.56

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Solution

The fourth proportional to 64,921.56, 89,591.38 and 36,239.56 is: 50,010.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,921.56 : 89,591.38 = 36,239.56 : x
  2. Step 2: Convert to fraction form
    64,921.56/89,591.38 = 36,239.56/x
  3. Step 3: Cross multiply
    64,921.56x = 89,591.38 × 36,239.56
  4. Step 4: Simplify right side
    64,921.56x = 3,246,751,876.42
  5. Step 5: Solve for x
    x = 3,246,751,876.42/64,921.56
  6. Step 6: Final answer
    x = 50,010.38

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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.