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Finding the Fourth Proportional to 79,244.75, 109,368.96 and 49,039.80

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Solution

The fourth proportional to 79,244.75, 109,368.96 and 49,039.80 is: 67,681.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,244.75 : 109,368.96 = 49,039.80 : x
  2. Step 2: Convert to fraction form
    79,244.75/109,368.96 = 49,039.80/x
  3. Step 3: Cross multiply
    79,244.75x = 109,368.96 × 49,039.80
  4. Step 4: Simplify right side
    79,244.75x = 5,363,432,391.30
  5. Step 5: Solve for x
    x = 5,363,432,391.30/79,244.75
  6. Step 6: Final answer
    x = 67,681.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.