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Finding the Fourth Proportional to 69,192.79, 103,789.17 and 49,509.79

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Solution

The fourth proportional to 69,192.79, 103,789.17 and 49,509.79 is: 74,264.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,192.79 : 103,789.17 = 49,509.79 : x
  2. Step 2: Convert to fraction form
    69,192.79/103,789.17 = 49,509.79/x
  3. Step 3: Cross multiply
    69,192.79x = 103,789.17 × 49,509.79
  4. Step 4: Simplify right side
    69,192.79x = 5,138,580,010.97
  5. Step 5: Solve for x
    x = 5,138,580,010.97/69,192.79
  6. Step 6: Final answer
    x = 74,264.67

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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.