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Finding the Fourth Proportional to 117,542.52, 162,189.72 and 72,205.92

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Solution

The fourth proportional to 117,542.52, 162,189.72 and 72,205.92 is: 99,632.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,542.52 : 162,189.72 = 72,205.92 : x
  2. Step 2: Convert to fraction form
    117,542.52/162,189.72 = 72,205.92/x
  3. Step 3: Cross multiply
    117,542.52x = 162,189.72 × 72,205.92
  4. Step 4: Simplify right side
    117,542.52x = 11,711,057,947.14
  5. Step 5: Solve for x
    x = 11,711,057,947.14/117,542.52
  6. Step 6: Final answer
    x = 99,632.52

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