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Finding the Fourth Proportional to 125,086.57, 187,628.67 and 54,059.42

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Solution

The fourth proportional to 125,086.57, 187,628.67 and 54,059.42 is: 81,088.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,086.57 : 187,628.67 = 54,059.42 : x
  2. Step 2: Convert to fraction form
    125,086.57/187,628.67 = 54,059.42/x
  3. Step 3: Cross multiply
    125,086.57x = 187,628.67 × 54,059.42
  4. Step 4: Simplify right side
    125,086.57x = 10,143,097,544.64
  5. Step 5: Solve for x
    x = 10,143,097,544.64/125,086.57
  6. Step 6: Final answer
    x = 81,088.62

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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.