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Finding the Fourth Proportional to 72,939.61, 109,423.14 and 50,239.27

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Solution

The fourth proportional to 72,939.61, 109,423.14 and 50,239.27 is: 75,368.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,939.61 : 109,423.14 = 50,239.27 : x
  2. Step 2: Convert to fraction form
    72,939.61/109,423.14 = 50,239.27/x
  3. Step 3: Cross multiply
    72,939.61x = 109,423.14 × 50,239.27
  4. Step 4: Simplify right side
    72,939.61x = 5,497,338,674.71
  5. Step 5: Solve for x
    x = 5,497,338,674.71/72,939.61
  6. Step 6: Final answer
    x = 75,368.36

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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.