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Finding the Fourth Proportional to 64,392.30, 96,603.36 and 20,016.66

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Solution

The fourth proportional to 64,392.30, 96,603.36 and 20,016.66 is: 30,029.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,392.30 : 96,603.36 = 20,016.66 : x
  2. Step 2: Convert to fraction form
    64,392.30/96,603.36 = 20,016.66/x
  3. Step 3: Cross multiply
    64,392.30x = 96,603.36 × 20,016.66
  4. Step 4: Simplify right side
    64,392.30x = 1,933,676,611.98
  5. Step 5: Solve for x
    x = 1,933,676,611.98/64,392.30
  6. Step 6: Final answer
    x = 30,029.62

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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.