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Finding the Fourth Proportional to 269,239.83, 403,907.78 and 89,336.07

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Solution

The fourth proportional to 269,239.83, 403,907.78 and 89,336.07 is: 134,020.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,239.83 : 403,907.78 = 89,336.07 : x
  2. Step 2: Convert to fraction form
    269,239.83/403,907.78 = 89,336.07/x
  3. Step 3: Cross multiply
    269,239.83x = 403,907.78 × 89,336.07
  4. Step 4: Simplify right side
    269,239.83x = 36,083,533,260.94
  5. Step 5: Solve for x
    x = 36,083,533,260.94/269,239.83
  6. Step 6: Final answer
    x = 134,020.04

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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.