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Finding the Fourth Proportional to 64,912.88, 89,579.77 and 35,104.88

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Solution

The fourth proportional to 64,912.88, 89,579.77 and 35,104.88 is: 48,444.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,912.88 : 89,579.77 = 35,104.88 : x
  2. Step 2: Convert to fraction form
    64,912.88/89,579.77 = 35,104.88/x
  3. Step 3: Cross multiply
    64,912.88x = 89,579.77 × 35,104.88
  4. Step 4: Simplify right side
    64,912.88x = 3,144,686,540.62
  5. Step 5: Solve for x
    x = 3,144,686,540.62/64,912.88
  6. Step 6: Final answer
    x = 48,444.73

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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.