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Finding the Fourth Proportional to 121,676.55, 167,920.20 and 67,962.75

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Solution

The fourth proportional to 121,676.55, 167,920.20 and 67,962.75 is: 93,792.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,676.55 : 167,920.20 = 67,962.75 : x
  2. Step 2: Convert to fraction form
    121,676.55/167,920.20 = 67,962.75/x
  3. Step 3: Cross multiply
    121,676.55x = 167,920.20 × 67,962.75
  4. Step 4: Simplify right side
    121,676.55x = 11,412,318,572.55
  5. Step 5: Solve for x
    x = 11,412,318,572.55/121,676.55
  6. Step 6: Final answer
    x = 93,792.26

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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.