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Finding the Fourth Proportional to 270,443.76, 405,561.84 and 92,917.68

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Solution

The fourth proportional to 270,443.76, 405,561.84 and 92,917.68 is: 139,340.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,443.76 : 405,561.84 = 92,917.68 : x
  2. Step 2: Convert to fraction form
    270,443.76/405,561.84 = 92,917.68/x
  3. Step 3: Cross multiply
    270,443.76x = 405,561.84 × 92,917.68
  4. Step 4: Simplify right side
    270,443.76x = 37,683,865,269.33
  5. Step 5: Solve for x
    x = 37,683,865,269.33/270,443.76
  6. Step 6: Final answer
    x = 139,340.86

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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.