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Finding the Fourth Proportional to 208,732.68, 313,033.32 and 68,458.68

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Solution

The fourth proportional to 208,732.68, 313,033.32 and 68,458.68 is: 102,666.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,732.68 : 313,033.32 = 68,458.68 : x
  2. Step 2: Convert to fraction form
    208,732.68/313,033.32 = 68,458.68/x
  3. Step 3: Cross multiply
    208,732.68x = 313,033.32 × 68,458.68
  4. Step 4: Simplify right side
    208,732.68x = 21,429,847,883.22
  5. Step 5: Solve for x
    x = 21,429,847,883.22/208,732.68
  6. Step 6: Final answer
    x = 102,666.47

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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.