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Finding the Fourth Proportional to 80,509.53, 111,083.13 and 44,690.58

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Solution

The fourth proportional to 80,509.53, 111,083.13 and 44,690.58 is: 61,661.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,509.53 : 111,083.13 = 44,690.58 : x
  2. Step 2: Convert to fraction form
    80,509.53/111,083.13 = 44,690.58/x
  3. Step 3: Cross multiply
    80,509.53x = 111,083.13 × 44,690.58
  4. Step 4: Simplify right side
    80,509.53x = 4,964,369,507.92
  5. Step 5: Solve for x
    x = 4,964,369,507.92/80,509.53
  6. Step 6: Final answer
    x = 61,661.89

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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.