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Finding the Fourth Proportional to 71,810.75, 107,669.86 and 34,369.92

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Solution

The fourth proportional to 71,810.75, 107,669.86 and 34,369.92 is: 51,532.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,810.75 : 107,669.86 = 34,369.92 : x
  2. Step 2: Convert to fraction form
    71,810.75/107,669.86 = 34,369.92/x
  3. Step 3: Cross multiply
    71,810.75x = 107,669.86 × 34,369.92
  4. Step 4: Simplify right side
    71,810.75x = 3,700,604,388.69
  5. Step 5: Solve for x
    x = 3,700,604,388.69/71,810.75
  6. Step 6: Final answer
    x = 51,532.73

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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.