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Finding the Fourth Proportional to 119,891.73, 165,449.67 and 66,176.73

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Solution

The fourth proportional to 119,891.73, 165,449.67 and 66,176.73 is: 91,323.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,891.73 : 165,449.67 = 66,176.73 : x
  2. Step 2: Convert to fraction form
    119,891.73/165,449.67 = 66,176.73/x
  3. Step 3: Cross multiply
    119,891.73x = 165,449.67 × 66,176.73
  4. Step 4: Simplify right side
    119,891.73x = 10,948,918,140.18
  5. Step 5: Solve for x
    x = 10,948,918,140.18/119,891.73
  6. Step 6: Final answer
    x = 91,323.38

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1.5x scale

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.