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Finding the Fourth Proportional to 120,760.97, 166,641.81 and 67,041.81

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Solution

The fourth proportional to 120,760.97, 166,641.81 and 67,041.81 is: 92,513.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,760.97 : 166,641.81 = 67,041.81 : x
  2. Step 2: Convert to fraction form
    120,760.97/166,641.81 = 67,041.81/x
  3. Step 3: Cross multiply
    120,760.97x = 166,641.81 × 67,041.81
  4. Step 4: Simplify right side
    120,760.97x = 11,171,968,564.08
  5. Step 5: Solve for x
    x = 11,171,968,564.08/120,760.97
  6. Step 6: Final answer
    x = 92,513.08

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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.