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Finding the Fourth Proportional to 64,793.64, 89,416.26 and 36,115.68

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Solution

The fourth proportional to 64,793.64, 89,416.26 and 36,115.68 is: 49,840.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,793.64 : 89,416.26 = 36,115.68 : x
  2. Step 2: Convert to fraction form
    64,793.64/89,416.26 = 36,115.68/x
  3. Step 3: Cross multiply
    64,793.64x = 89,416.26 × 36,115.68
  4. Step 4: Simplify right side
    64,793.64x = 3,229,329,032.96
  5. Step 5: Solve for x
    x = 3,229,329,032.96/64,793.64
  6. Step 6: Final answer
    x = 49,840.22

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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.