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Finding the Fourth Proportional to 64,797.89, 96,977.36 and 39,853.73

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Solution

The fourth proportional to 64,797.89, 96,977.36 and 39,853.73 is: 59,645.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,797.89 : 96,977.36 = 39,853.73 : x
  2. Step 2: Convert to fraction form
    64,797.89/96,977.36 = 39,853.73/x
  3. Step 3: Cross multiply
    64,797.89x = 96,977.36 × 39,853.73
  4. Step 4: Simplify right side
    64,797.89x = 3,864,909,863.63
  5. Step 5: Solve for x
    x = 3,864,909,863.63/64,797.89
  6. Step 6: Final answer
    x = 59,645.62

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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.