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Finding the Fourth Proportional to 121,466.39, 167,631.12 and 67,018.29

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Solution

The fourth proportional to 121,466.39, 167,631.12 and 67,018.29 is: 92,489.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,466.39 : 167,631.12 = 67,018.29 : x
  2. Step 2: Convert to fraction form
    121,466.39/167,631.12 = 67,018.29/x
  3. Step 3: Cross multiply
    121,466.39x = 167,631.12 × 67,018.29
  4. Step 4: Simplify right side
    121,466.39x = 11,234,350,384.57
  5. Step 5: Solve for x
    x = 11,234,350,384.57/121,466.39
  6. Step 6: Final answer
    x = 92,489.38

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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.