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Finding the Fourth Proportional to 68,724.62, 102,957.59 and 53,888.48

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Solution

The fourth proportional to 68,724.62, 102,957.59 and 53,888.48 is: 80,731.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,724.62 : 102,957.59 = 53,888.48 : x
  2. Step 2: Convert to fraction form
    68,724.62/102,957.59 = 53,888.48/x
  3. Step 3: Cross multiply
    68,724.62x = 102,957.59 × 53,888.48
  4. Step 4: Simplify right side
    68,724.62x = 5,548,227,245.33
  5. Step 5: Solve for x
    x = 5,548,227,245.33/68,724.62
  6. Step 6: Final answer
    x = 80,731.30

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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.