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Finding the Fourth Proportional to 81,314.37, 112,215.51 and 49,048.83

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Solution

The fourth proportional to 81,314.37, 112,215.51 and 49,048.83 is: 67,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,314.37 : 112,215.51 = 49,048.83 : x
  2. Step 2: Convert to fraction form
    81,314.37/112,215.51 = 49,048.83/x
  3. Step 3: Cross multiply
    81,314.37x = 112,215.51 × 49,048.83
  4. Step 4: Simplify right side
    81,314.37x = 5,504,039,473.35
  5. Step 5: Solve for x
    x = 5,504,039,473.35/81,314.37
  6. Step 6: Final answer
    x = 67,688.40

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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.