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Finding the Fourth Proportional to 15,139.62, 22,696.65 and 7,237.80

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Solution

The fourth proportional to 15,139.62, 22,696.65 and 7,237.80 is: 10,850.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.62 : 22,696.65 = 7,237.80 : x
  2. Step 2: Convert to fraction form
    15,139.62/22,696.65 = 7,237.80/x
  3. Step 3: Cross multiply
    15,139.62x = 22,696.65 × 7,237.80
  4. Step 4: Simplify right side
    15,139.62x = 164,273,813.37
  5. Step 5: Solve for x
    x = 164,273,813.37/15,139.62
  6. Step 6: Final answer
    x = 10,850.59

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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.