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Finding the Fourth Proportional to 104,530.50, 144,311.90 and 68,824.22

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Solution

The fourth proportional to 104,530.50, 144,311.90 and 68,824.22 is: 95,016.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,530.50 : 144,311.90 = 68,824.22 : x
  2. Step 2: Convert to fraction form
    104,530.50/144,311.90 = 68,824.22/x
  3. Step 3: Cross multiply
    104,530.50x = 144,311.90 × 68,824.22
  4. Step 4: Simplify right side
    104,530.50x = 9,932,152,888.54
  5. Step 5: Solve for x
    x = 9,932,152,888.54/104,530.50
  6. Step 6: Final answer
    x = 95,016.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.