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Finding the Fourth Proportional to 80,478.53, 111,055.16 and 44,668.55

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Solution

The fourth proportional to 80,478.53, 111,055.16 and 44,668.55 is: 61,639.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,478.53 : 111,055.16 = 44,668.55 : x
  2. Step 2: Convert to fraction form
    80,478.53/111,055.16 = 44,668.55/x
  3. Step 3: Cross multiply
    80,478.53x = 111,055.16 × 44,668.55
  4. Step 4: Simplify right side
    80,478.53x = 4,960,672,743.88
  5. Step 5: Solve for x
    x = 4,960,672,743.88/80,478.53
  6. Step 6: Final answer
    x = 61,639.70

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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.