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Finding the Fourth Proportional to 139,614.81, 209,353.02 and 49,644.02

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Solution

The fourth proportional to 139,614.81, 209,353.02 and 49,644.02 is: 74,441.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,614.81 : 209,353.02 = 49,644.02 : x
  2. Step 2: Convert to fraction form
    139,614.81/209,353.02 = 49,644.02/x
  3. Step 3: Cross multiply
    139,614.81x = 209,353.02 × 49,644.02
  4. Step 4: Simplify right side
    139,614.81x = 10,393,125,511.94
  5. Step 5: Solve for x
    x = 10,393,125,511.94/139,614.81
  6. Step 6: Final answer
    x = 74,441.43

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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.