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Finding the Fourth Proportional to 269,243.70, 403,913.60 and 89,339.92

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Solution

The fourth proportional to 269,243.70, 403,913.60 and 89,339.92 is: 134,025.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,243.70 : 403,913.60 = 89,339.92 : x
  2. Step 2: Convert to fraction form
    269,243.70/403,913.60 = 89,339.92/x
  3. Step 3: Cross multiply
    269,243.70x = 403,913.60 × 89,339.92
  4. Step 4: Simplify right side
    269,243.70x = 36,085,608,710.91
  5. Step 5: Solve for x
    x = 36,085,608,710.91/269,243.70
  6. Step 6: Final answer
    x = 134,025.82

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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.