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Finding the Fourth Proportional to 80,491.60, 111,079.64 and 44,683.92

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Solution

The fourth proportional to 80,491.60, 111,079.64 and 44,683.92 is: 61,664.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,491.60 : 111,079.64 = 44,683.92 : x
  2. Step 2: Convert to fraction form
    80,491.60/111,079.64 = 44,683.92/x
  3. Step 3: Cross multiply
    80,491.60x = 111,079.64 × 44,683.92
  4. Step 4: Simplify right side
    80,491.60x = 4,963,473,747.39
  5. Step 5: Solve for x
    x = 4,963,473,747.39/80,491.60
  6. Step 6: Final answer
    x = 61,664.49

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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.