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Finding the Fourth Proportional to 393,101.01, 589,789.85 and 193,561.56

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Solution

The fourth proportional to 393,101.01, 589,789.85 and 193,561.56 is: 290,410.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,101.01 : 589,789.85 = 193,561.56 : x
  2. Step 2: Convert to fraction form
    393,101.01/589,789.85 = 193,561.56/x
  3. Step 3: Cross multiply
    393,101.01x = 589,789.85 × 193,561.56
  4. Step 4: Simplify right side
    393,101.01x = 114,160,642,470.36
  5. Step 5: Solve for x
    x = 114,160,642,470.36/393,101.01
  6. Step 6: Final answer
    x = 290,410.45

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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.