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Finding the Fourth Proportional to 69,858.65, 104,770.47 and 29,857.86

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Solution

The fourth proportional to 69,858.65, 104,770.47 and 29,857.86 is: 44,779.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,858.65 : 104,770.47 = 29,857.86 : x
  2. Step 2: Convert to fraction form
    69,858.65/104,770.47 = 29,857.86/x
  3. Step 3: Cross multiply
    69,858.65x = 104,770.47 × 29,857.86
  4. Step 4: Simplify right side
    69,858.65x = 3,128,222,025.39
  5. Step 5: Solve for x
    x = 3,128,222,025.39/69,858.65
  6. Step 6: Final answer
    x = 44,779.31

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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.