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Finding the Fourth Proportional to 69,619.70, 104,351.79 and 64,014.91

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Solution

The fourth proportional to 69,619.70, 104,351.79 and 64,014.91 is: 95,950.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,619.70 : 104,351.79 = 64,014.91 : x
  2. Step 2: Convert to fraction form
    69,619.70/104,351.79 = 64,014.91/x
  3. Step 3: Cross multiply
    69,619.70x = 104,351.79 × 64,014.91
  4. Step 4: Simplify right side
    69,619.70x = 6,680,070,424.37
  5. Step 5: Solve for x
    x = 6,680,070,424.37/69,619.70
  6. Step 6: Final answer
    x = 95,950.86

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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.