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Finding the Fourth Proportional to 69,236.70, 103,780.89 and 49,455.24

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Solution

The fourth proportional to 69,236.70, 103,780.89 and 49,455.24 is: 74,129.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,236.70 : 103,780.89 = 49,455.24 : x
  2. Step 2: Convert to fraction form
    69,236.70/103,780.89 = 49,455.24/x
  3. Step 3: Cross multiply
    69,236.70x = 103,780.89 × 49,455.24
  4. Step 4: Simplify right side
    69,236.70x = 5,132,508,822.36
  5. Step 5: Solve for x
    x = 5,132,508,822.36/69,236.70
  6. Step 6: Final answer
    x = 74,129.89

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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.