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Finding the Fourth Proportional to 68,674.84, 102,873.75 and 57,550.30

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Solution

The fourth proportional to 68,674.84, 102,873.75 and 57,550.30 is: 86,209.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,674.84 : 102,873.75 = 57,550.30 : x
  2. Step 2: Convert to fraction form
    68,674.84/102,873.75 = 57,550.30/x
  3. Step 3: Cross multiply
    68,674.84x = 102,873.75 × 57,550.30
  4. Step 4: Simplify right side
    68,674.84x = 5,920,415,174.63
  5. Step 5: Solve for x
    x = 5,920,415,174.63/68,674.84
  6. Step 6: Final answer
    x = 86,209.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.