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Finding the Fourth Proportional to 64,899.54, 89,558.73 and 36,220.44

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Solution

The fourth proportional to 64,899.54, 89,558.73 and 36,220.44 is: 49,982.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,899.54 : 89,558.73 = 36,220.44 : x
  2. Step 2: Convert to fraction form
    64,899.54/89,558.73 = 36,220.44/x
  3. Step 3: Cross multiply
    64,899.54x = 89,558.73 × 36,220.44
  4. Step 4: Simplify right side
    64,899.54x = 3,243,856,606.44
  5. Step 5: Solve for x
    x = 3,243,856,606.44/64,899.54
  6. Step 6: Final answer
    x = 49,982.74

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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.