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Finding the Fourth Proportional to 119,757.56, 165,266.60 and 66,041.19

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Solution

The fourth proportional to 119,757.56, 165,266.60 and 66,041.19 is: 91,137.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,757.56 : 165,266.60 = 66,041.19 : x
  2. Step 2: Convert to fraction form
    119,757.56/165,266.60 = 66,041.19/x
  3. Step 3: Cross multiply
    119,757.56x = 165,266.60 × 66,041.19
  4. Step 4: Simplify right side
    119,757.56x = 10,914,402,601.05
  5. Step 5: Solve for x
    x = 10,914,402,601.05/119,757.56
  6. Step 6: Final answer
    x = 91,137.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.