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Finding the Fourth Proportional to 121,149.82, 167,186.74 and 67,433.68

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Solution

The fourth proportional to 121,149.82, 167,186.74 and 67,433.68 is: 93,058.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,149.82 : 167,186.74 = 67,433.68 : x
  2. Step 2: Convert to fraction form
    121,149.82/167,186.74 = 67,433.68/x
  3. Step 3: Cross multiply
    121,149.82x = 167,186.74 × 67,433.68
  4. Step 4: Simplify right side
    121,149.82x = 11,274,017,125.40
  5. Step 5: Solve for x
    x = 11,274,017,125.40/121,149.82
  6. Step 6: Final answer
    x = 93,058.47

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1.5x scale

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.