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Finding the Fourth Proportional to 64,872.80, 97,263.92 and 33,221.36

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Solution

The fourth proportional to 64,872.80, 97,263.92 and 33,221.36 is: 49,808.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,872.80 : 97,263.92 = 33,221.36 : x
  2. Step 2: Convert to fraction form
    64,872.80/97,263.92 = 33,221.36/x
  3. Step 3: Cross multiply
    64,872.80x = 97,263.92 × 33,221.36
  4. Step 4: Simplify right side
    64,872.80x = 3,231,239,701.33
  5. Step 5: Solve for x
    x = 3,231,239,701.33/64,872.80
  6. Step 6: Final answer
    x = 49,808.85

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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.