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Finding the Fourth Proportional to 193,561.40, 290,687.70 and 141,030.20

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Solution

The fourth proportional to 193,561.40, 290,687.70 and 141,030.20 is: 211,797.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,561.40 : 290,687.70 = 141,030.20 : x
  2. Step 2: Convert to fraction form
    193,561.40/290,687.70 = 141,030.20/x
  3. Step 3: Cross multiply
    193,561.40x = 290,687.70 × 141,030.20
  4. Step 4: Simplify right side
    193,561.40x = 40,995,744,468.54
  5. Step 5: Solve for x
    x = 40,995,744,468.54/193,561.40
  6. Step 6: Final answer
    x = 211,797.11

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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.