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Finding the Fourth Proportional to 121,592.19, 167,799.87 and 67,144.21

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Solution

The fourth proportional to 121,592.19, 167,799.87 and 67,144.21 is: 92,660.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,592.19 : 167,799.87 = 67,144.21 : x
  2. Step 2: Convert to fraction form
    121,592.19/167,799.87 = 67,144.21/x
  3. Step 3: Cross multiply
    121,592.19x = 167,799.87 × 67,144.21
  4. Step 4: Simplify right side
    121,592.19x = 11,266,789,709.25
  5. Step 5: Solve for x
    x = 11,266,789,709.25/121,592.19
  6. Step 6: Final answer
    x = 92,660.47

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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.