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Finding the Fourth Proportional to 8,599.69, 11,865.45 and 5,012.47

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Solution

The fourth proportional to 8,599.69, 11,865.45 and 5,012.47 is: 6,915.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,599.69 : 11,865.45 = 5,012.47 : x
  2. Step 2: Convert to fraction form
    8,599.69/11,865.45 = 5,012.47/x
  3. Step 3: Cross multiply
    8,599.69x = 11,865.45 × 5,012.47
  4. Step 4: Simplify right side
    8,599.69x = 59,475,212.16
  5. Step 5: Solve for x
    x = 59,475,212.16/8,599.69
  6. Step 6: Final answer
    x = 6,915.97

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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.