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Finding the Fourth Proportional to 70,694.88, 106,057.12 and 63,636.96

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Solution

The fourth proportional to 70,694.88, 106,057.12 and 63,636.96 is: 95,468.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,694.88 : 106,057.12 = 63,636.96 : x
  2. Step 2: Convert to fraction form
    70,694.88/106,057.12 = 63,636.96/x
  3. Step 3: Cross multiply
    70,694.88x = 106,057.12 × 63,636.96
  4. Step 4: Simplify right side
    70,694.88x = 6,749,152,703.16
  5. Step 5: Solve for x
    x = 6,749,152,703.16/70,694.88
  6. Step 6: Final answer
    x = 95,468.76

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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.