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Finding the Fourth Proportional to 64,780.82, 96,951.77 and 39,836.67

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Solution

The fourth proportional to 64,780.82, 96,951.77 and 39,836.67 is: 59,620.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,780.82 : 96,951.77 = 39,836.67 : x
  2. Step 2: Convert to fraction form
    64,780.82/96,951.77 = 39,836.67/x
  3. Step 3: Cross multiply
    64,780.82x = 96,951.77 × 39,836.67
  4. Step 4: Simplify right side
    64,780.82x = 3,862,235,468.22
  5. Step 5: Solve for x
    x = 3,862,235,468.22/64,780.82
  6. Step 6: Final answer
    x = 59,620.05

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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.