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Finding the Fourth Proportional to 161,422.97, 222,766.69 and 89,809.66

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Solution

The fourth proportional to 161,422.97, 222,766.69 and 89,809.66 is: 123,938.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,422.97 : 222,766.69 = 89,809.66 : x
  2. Step 2: Convert to fraction form
    161,422.97/222,766.69 = 89,809.66/x
  3. Step 3: Cross multiply
    161,422.97x = 222,766.69 × 89,809.66
  4. Step 4: Simplify right side
    161,422.97x = 20,006,599,574.39
  5. Step 5: Solve for x
    x = 20,006,599,574.39/161,422.97
  6. Step 6: Final answer
    x = 123,938.99

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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.