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Finding the Fourth Proportional to 120,900.93, 166,839.93 and 67,183.35

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Solution

The fourth proportional to 120,900.93, 166,839.93 and 67,183.35 is: 92,711.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,900.93 : 166,839.93 = 67,183.35 : x
  2. Step 2: Convert to fraction form
    120,900.93/166,839.93 = 67,183.35/x
  3. Step 3: Cross multiply
    120,900.93x = 166,839.93 × 67,183.35
  4. Step 4: Simplify right side
    120,900.93x = 11,208,865,411.17
  5. Step 5: Solve for x
    x = 11,208,865,411.17/120,900.93
  6. Step 6: Final answer
    x = 92,711.16

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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.