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Finding the Fourth Proportional to 121,539.92, 167,725.12 and 67,092.12

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Solution

The fourth proportional to 121,539.92, 167,725.12 and 67,092.12 is: 92,587.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,539.92 : 167,725.12 = 67,092.12 : x
  2. Step 2: Convert to fraction form
    121,539.92/167,725.12 = 67,092.12/x
  3. Step 3: Cross multiply
    121,539.92x = 167,725.12 × 67,092.12
  4. Step 4: Simplify right side
    121,539.92x = 11,253,033,878.05
  5. Step 5: Solve for x
    x = 11,253,033,878.05/121,539.92
  6. Step 6: Final answer
    x = 92,587.14

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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.