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Finding the Fourth Proportional to 64,463.43, 96,765.86 and 51,221.55

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Solution

The fourth proportional to 64,463.43, 96,765.86 and 51,221.55 is: 76,888.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,463.43 : 96,765.86 = 51,221.55 : x
  2. Step 2: Convert to fraction form
    64,463.43/96,765.86 = 51,221.55/x
  3. Step 3: Cross multiply
    64,463.43x = 96,765.86 × 51,221.55
  4. Step 4: Simplify right side
    64,463.43x = 4,956,497,336.28
  5. Step 5: Solve for x
    x = 4,956,497,336.28/64,463.43
  6. Step 6: Final answer
    x = 76,888.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.