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Finding the Fourth Proportional to 86,808.76, 119,846.28 and 57,759.94

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Solution

The fourth proportional to 86,808.76, 119,846.28 and 57,759.94 is: 79,742.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,808.76 : 119,846.28 = 57,759.94 : x
  2. Step 2: Convert to fraction form
    86,808.76/119,846.28 = 57,759.94/x
  3. Step 3: Cross multiply
    86,808.76x = 119,846.28 × 57,759.94
  4. Step 4: Simplify right side
    86,808.76x = 6,922,313,942.02
  5. Step 5: Solve for x
    x = 6,922,313,942.02/86,808.76
  6. Step 6: Final answer
    x = 79,742.11

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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.