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Finding the Fourth Proportional to 110,554.40, 165,734.40 and 66,198.80

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Solution

The fourth proportional to 110,554.40, 165,734.40 and 66,198.80 is: 99,240.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,554.40 : 165,734.40 = 66,198.80 : x
  2. Step 2: Convert to fraction form
    110,554.40/165,734.40 = 66,198.80/x
  3. Step 3: Cross multiply
    110,554.40x = 165,734.40 × 66,198.80
  4. Step 4: Simplify right side
    110,554.40x = 10,971,418,398.72
  5. Step 5: Solve for x
    x = 10,971,418,398.72/110,554.40
  6. Step 6: Final answer
    x = 99,240.00

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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.