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Finding the Fourth Proportional to 121,553.96, 167,752.88 and 67,849.43

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Solution

The fourth proportional to 121,553.96, 167,752.88 and 67,849.43 is: 93,636.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,553.96 : 167,752.88 = 67,849.43 : x
  2. Step 2: Convert to fraction form
    121,553.96/167,752.88 = 67,849.43/x
  3. Step 3: Cross multiply
    121,553.96x = 167,752.88 × 67,849.43
  4. Step 4: Simplify right side
    121,553.96x = 11,381,936,110.85
  5. Step 5: Solve for x
    x = 11,381,936,110.85/121,553.96
  6. Step 6: Final answer
    x = 93,636.90

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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.