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Finding the Fourth Proportional to 121,046.51, 167,041.72 and 67,330.37

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Solution

The fourth proportional to 121,046.51, 167,041.72 and 67,330.37 is: 92,914.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,046.51 : 167,041.72 = 67,330.37 : x
  2. Step 2: Convert to fraction form
    121,046.51/167,041.72 = 67,330.37/x
  3. Step 3: Cross multiply
    121,046.51x = 167,041.72 × 67,330.37
  4. Step 4: Simplify right side
    121,046.51x = 11,246,980,813.04
  5. Step 5: Solve for x
    x = 11,246,980,813.04/121,046.51
  6. Step 6: Final answer
    x = 92,914.54

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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.