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Finding the Fourth Proportional to 128,092.73, 176,624.19 and 82,711.11

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Solution

The fourth proportional to 128,092.73, 176,624.19 and 82,711.11 is: 114,048.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,092.73 : 176,624.19 = 82,711.11 : x
  2. Step 2: Convert to fraction form
    128,092.73/176,624.19 = 82,711.11/x
  3. Step 3: Cross multiply
    128,092.73x = 176,624.19 × 82,711.11
  4. Step 4: Simplify right side
    128,092.73x = 14,608,782,807.75
  5. Step 5: Solve for x
    x = 14,608,782,807.75/128,092.73
  6. Step 6: Final answer
    x = 114,048.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.