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Finding the Fourth Proportional to 67,904.92, 101,818.50 and 63,991

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Solution

The fourth proportional to 67,904.92, 101,818.50 and 63,991 is: 95,949.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,904.92 : 101,818.50 = 63,991 : x
  2. Step 2: Convert to fraction form
    67,904.92/101,818.50 = 63,991/x
  3. Step 3: Cross multiply
    67,904.92x = 101,818.50 × 63,991
  4. Step 4: Simplify right side
    67,904.92x = 6,515,467,633.50
  5. Step 5: Solve for x
    x = 6,515,467,633.50/67,904.92
  6. Step 6: Final answer
    x = 95,949.86

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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.