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Finding the Fourth Proportional to 79,515.73, 109,731.95 and 43,709.41

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Solution

The fourth proportional to 79,515.73, 109,731.95 and 43,709.41 is: 60,319.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,515.73 : 109,731.95 = 43,709.41 : x
  2. Step 2: Convert to fraction form
    79,515.73/109,731.95 = 43,709.41/x
  3. Step 3: Cross multiply
    79,515.73x = 109,731.95 × 43,709.41
  4. Step 4: Simplify right side
    79,515.73x = 4,796,318,792.65
  5. Step 5: Solve for x
    x = 4,796,318,792.65/79,515.73
  6. Step 6: Final answer
    x = 60,319.12

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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.