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Finding the Fourth Proportional to 91,412.92, 137,110.74 and 29,072.44

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Solution

The fourth proportional to 91,412.92, 137,110.74 and 29,072.44 is: 43,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,412.92 : 137,110.74 = 29,072.44 : x
  2. Step 2: Convert to fraction form
    91,412.92/137,110.74 = 29,072.44/x
  3. Step 3: Cross multiply
    91,412.92x = 137,110.74 × 29,072.44
  4. Step 4: Simplify right side
    91,412.92x = 3,986,143,762.01
  5. Step 5: Solve for x
    x = 3,986,143,762.01/91,412.92
  6. Step 6: Final answer
    x = 43,605.91

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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.