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Finding the Fourth Proportional to 71,812.77, 107,768.36 and 25,065.64

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Solution

The fourth proportional to 71,812.77, 107,768.36 and 25,065.64 is: 37,615.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,812.77 : 107,768.36 = 25,065.64 : x
  2. Step 2: Convert to fraction form
    71,812.77/107,768.36 = 25,065.64/x
  3. Step 3: Cross multiply
    71,812.77x = 107,768.36 × 25,065.64
  4. Step 4: Simplify right side
    71,812.77x = 2,701,282,915.15
  5. Step 5: Solve for x
    x = 2,701,282,915.15/71,812.77
  6. Step 6: Final answer
    x = 37,615.63

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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.