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Finding the Fourth Proportional to 109,464.62, 164,196.72 and 84,540.92

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Solution

The fourth proportional to 109,464.62, 164,196.72 and 84,540.92 is: 126,811.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,464.62 : 164,196.72 = 84,540.92 : x
  2. Step 2: Convert to fraction form
    109,464.62/164,196.72 = 84,540.92/x
  3. Step 3: Cross multiply
    109,464.62x = 164,196.72 × 84,540.92
  4. Step 4: Simplify right side
    109,464.62x = 13,881,340,948.80
  5. Step 5: Solve for x
    x = 13,881,340,948.80/109,464.62
  6. Step 6: Final answer
    x = 126,811.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.