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Finding the Fourth Proportional to 113,668.97, 170,560.94 and 75,744.06

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Solution

The fourth proportional to 113,668.97, 170,560.94 and 75,744.06 is: 113,654.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,668.97 : 170,560.94 = 75,744.06 : x
  2. Step 2: Convert to fraction form
    113,668.97/170,560.94 = 75,744.06/x
  3. Step 3: Cross multiply
    113,668.97x = 170,560.94 × 75,744.06
  4. Step 4: Simplify right side
    113,668.97x = 12,918,978,440.16
  5. Step 5: Solve for x
    x = 12,918,978,440.16/113,668.97
  6. Step 6: Final answer
    x = 113,654.40

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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.