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Finding the Fourth Proportional to 84,728.87, 126,892.91 and 73,574.97

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Solution

The fourth proportional to 84,728.87, 126,892.91 and 73,574.97 is: 110,188.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,728.87 : 126,892.91 = 73,574.97 : x
  2. Step 2: Convert to fraction form
    84,728.87/126,892.91 = 73,574.97/x
  3. Step 3: Cross multiply
    84,728.87x = 126,892.91 × 73,574.97
  4. Step 4: Simplify right side
    84,728.87x = 9,336,141,678.59
  5. Step 5: Solve for x
    x = 9,336,141,678.59/84,728.87
  6. Step 6: Final answer
    x = 110,188.44

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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.