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Finding the Fourth Proportional to 81,049.32, 111,907.32 and 52,385.94

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Solution

The fourth proportional to 81,049.32, 111,907.32 and 52,385.94 is: 72,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,049.32 : 111,907.32 = 52,385.94 : x
  2. Step 2: Convert to fraction form
    81,049.32/111,907.32 = 52,385.94/x
  3. Step 3: Cross multiply
    81,049.32x = 111,907.32 × 52,385.94
  4. Step 4: Simplify right side
    81,049.32x = 5,862,370,151.08
  5. Step 5: Solve for x
    x = 5,862,370,151.08/81,049.32
  6. Step 6: Final answer
    x = 72,330.90

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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.