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Finding the Fourth Proportional to 193,607.60, 290,425.80 and 68,932.40

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Solution

The fourth proportional to 193,607.60, 290,425.80 and 68,932.40 is: 103,403.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,607.60 : 290,425.80 = 68,932.40 : x
  2. Step 2: Convert to fraction form
    193,607.60/290,425.80 = 68,932.40/x
  3. Step 3: Cross multiply
    193,607.60x = 290,425.80 × 68,932.40
  4. Step 4: Simplify right side
    193,607.60x = 20,019,747,415.92
  5. Step 5: Solve for x
    x = 20,019,747,415.92/193,607.60
  6. Step 6: Final answer
    x = 103,403.73

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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.