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Finding the Fourth Proportional to 10,600.74, 15,900.30 and 4,028.40

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Solution

The fourth proportional to 10,600.74, 15,900.30 and 4,028.40 is: 6,042.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,600.74 : 15,900.30 = 4,028.40 : x
  2. Step 2: Convert to fraction form
    10,600.74/15,900.30 = 4,028.40/x
  3. Step 3: Cross multiply
    10,600.74x = 15,900.30 × 4,028.40
  4. Step 4: Simplify right side
    10,600.74x = 64,052,768.52
  5. Step 5: Solve for x
    x = 64,052,768.52/10,600.74
  6. Step 6: Final answer
    x = 6,042.29

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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.