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Finding the Fourth Proportional to 68,061.40, 102,022.44 and 66,353.92

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Solution

The fourth proportional to 68,061.40, 102,022.44 and 66,353.92 is: 99,462.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,061.40 : 102,022.44 = 66,353.92 : x
  2. Step 2: Convert to fraction form
    68,061.40/102,022.44 = 66,353.92/x
  3. Step 3: Cross multiply
    68,061.40x = 102,022.44 × 66,353.92
  4. Step 4: Simplify right side
    68,061.40x = 6,769,588,821.96
  5. Step 5: Solve for x
    x = 6,769,588,821.96/68,061.40
  6. Step 6: Final answer
    x = 99,462.97

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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.