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Finding the Fourth Proportional to 144,698.48, 217,121.81 and 68,882.82

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Solution

The fourth proportional to 144,698.48, 217,121.81 and 68,882.82 is: 103,359.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,698.48 : 217,121.81 = 68,882.82 : x
  2. Step 2: Convert to fraction form
    144,698.48/217,121.81 = 68,882.82/x
  3. Step 3: Cross multiply
    144,698.48x = 217,121.81 × 68,882.82
  4. Step 4: Simplify right side
    144,698.48x = 14,955,962,211.89
  5. Step 5: Solve for x
    x = 14,955,962,211.89/144,698.48
  6. Step 6: Final answer
    x = 103,359.50

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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.