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Finding the Fourth Proportional to 28,756.53, 43,136.82 and 7,696.53

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Solution

The fourth proportional to 28,756.53, 43,136.82 and 7,696.53 is: 11,545.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,756.53 : 43,136.82 = 7,696.53 : x
  2. Step 2: Convert to fraction form
    28,756.53/43,136.82 = 7,696.53/x
  3. Step 3: Cross multiply
    28,756.53x = 43,136.82 × 7,696.53
  4. Step 4: Simplify right side
    28,756.53x = 332,003,829.23
  5. Step 5: Solve for x
    x = 332,003,829.23/28,756.53
  6. Step 6: Final answer
    x = 11,545.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.