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Finding the Fourth Proportional to 93,491.61, 140,133.52 and 71,231.59

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Solution

The fourth proportional to 93,491.61, 140,133.52 and 71,231.59 is: 106,768.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,491.61 : 140,133.52 = 71,231.59 : x
  2. Step 2: Convert to fraction form
    93,491.61/140,133.52 = 71,231.59/x
  3. Step 3: Cross multiply
    93,491.61x = 140,133.52 × 71,231.59
  4. Step 4: Simplify right side
    93,491.61x = 9,981,933,441.90
  5. Step 5: Solve for x
    x = 9,981,933,441.90/93,491.61
  6. Step 6: Final answer
    x = 106,768.23

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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.