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Finding the Fourth Proportional to 7,900.50, 10,901.26 and 5,104.38

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Solution

The fourth proportional to 7,900.50, 10,901.26 and 5,104.38 is: 7,043.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.50 : 10,901.26 = 5,104.38 : x
  2. Step 2: Convert to fraction form
    7,900.50/10,901.26 = 5,104.38/x
  3. Step 3: Cross multiply
    7,900.50x = 10,901.26 × 5,104.38
  4. Step 4: Simplify right side
    7,900.50x = 55,644,106.25
  5. Step 5: Solve for x
    x = 55,644,106.25/7,900.50
  6. Step 6: Final answer
    x = 7,043.12

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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.