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Finding the Fourth Proportional to 193,900.80, 290,851.20 and 185,606.40

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Solution

The fourth proportional to 193,900.80, 290,851.20 and 185,606.40 is: 278,409.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,900.80 : 290,851.20 = 185,606.40 : x
  2. Step 2: Convert to fraction form
    193,900.80/290,851.20 = 185,606.40/x
  3. Step 3: Cross multiply
    193,900.80x = 290,851.20 × 185,606.40
  4. Step 4: Simplify right side
    193,900.80x = 53,983,844,167.68
  5. Step 5: Solve for x
    x = 53,983,844,167.68/193,900.80
  6. Step 6: Final answer
    x = 278,409.60

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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.