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Finding the Fourth Proportional to 109,858.80, 164,788.20 and 43,301.10

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Solution

The fourth proportional to 109,858.80, 164,788.20 and 43,301.10 is: 64,951.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,858.80 : 164,788.20 = 43,301.10 : x
  2. Step 2: Convert to fraction form
    109,858.80/164,788.20 = 43,301.10/x
  3. Step 3: Cross multiply
    109,858.80x = 164,788.20 × 43,301.10
  4. Step 4: Simplify right side
    109,858.80x = 7,135,510,327.02
  5. Step 5: Solve for x
    x = 7,135,510,327.02/109,858.80
  6. Step 6: Final answer
    x = 64,951.65

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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.