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Finding the Fourth Proportional to 121,258.54, 167,332.39 and 67,542.45

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Solution

The fourth proportional to 121,258.54, 167,332.39 and 67,542.45 is: 93,206.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,258.54 : 167,332.39 = 67,542.45 : x
  2. Step 2: Convert to fraction form
    121,258.54/167,332.39 = 67,542.45/x
  3. Step 3: Cross multiply
    121,258.54x = 167,332.39 × 67,542.45
  4. Step 4: Simplify right side
    121,258.54x = 11,302,039,584.96
  5. Step 5: Solve for x
    x = 11,302,039,584.96/121,258.54
  6. Step 6: Final answer
    x = 93,206.13

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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.