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Finding the Fourth Proportional to 193,394.82, 289,892.67 and 81,140.22

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Solution

The fourth proportional to 193,394.82, 289,892.67 and 81,140.22 is: 121,626.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,394.82 : 289,892.67 = 81,140.22 : x
  2. Step 2: Convert to fraction form
    193,394.82/289,892.67 = 81,140.22/x
  3. Step 3: Cross multiply
    193,394.82x = 289,892.67 × 81,140.22
  4. Step 4: Simplify right side
    193,394.82x = 23,521,955,020.19
  5. Step 5: Solve for x
    x = 23,521,955,020.19/193,394.82
  6. Step 6: Final answer
    x = 121,626.60

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1.5x scale

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.