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Finding the Fourth Proportional to 18,750.92, 28,116.90 and 6,266.60

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Solution

The fourth proportional to 18,750.92, 28,116.90 and 6,266.60 is: 9,396.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.92 : 28,116.90 = 6,266.60 : x
  2. Step 2: Convert to fraction form
    18,750.92/28,116.90 = 6,266.60/x
  3. Step 3: Cross multiply
    18,750.92x = 28,116.90 × 6,266.60
  4. Step 4: Simplify right side
    18,750.92x = 176,197,365.54
  5. Step 5: Solve for x
    x = 176,197,365.54/18,750.92
  6. Step 6: Final answer
    x = 9,396.73

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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.