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Finding the Fourth Proportional to 109,794.80, 164,886.60 and 84,895.40

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Solution

The fourth proportional to 109,794.80, 164,886.60 and 84,895.40 is: 127,493.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,794.80 : 164,886.60 = 84,895.40 : x
  2. Step 2: Convert to fraction form
    109,794.80/164,886.60 = 84,895.40/x
  3. Step 3: Cross multiply
    109,794.80x = 164,886.60 × 84,895.40
  4. Step 4: Simplify right side
    109,794.80x = 13,998,113,861.64
  5. Step 5: Solve for x
    x = 13,998,113,861.64/109,794.80
  6. Step 6: Final answer
    x = 127,493.41

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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.