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Finding the Fourth Proportional to 69,850.91, 104,801.72 and 43,165.80

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Solution

The fourth proportional to 69,850.91, 104,801.72 and 43,165.80 is: 64,764.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,850.91 : 104,801.72 = 43,165.80 : x
  2. Step 2: Convert to fraction form
    69,850.91/104,801.72 = 43,165.80/x
  3. Step 3: Cross multiply
    69,850.91x = 104,801.72 × 43,165.80
  4. Step 4: Simplify right side
    69,850.91x = 4,523,849,869.35
  5. Step 5: Solve for x
    x = 4,523,849,869.35/69,850.91
  6. Step 6: Final answer
    x = 64,764.36

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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.