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Finding the Fourth Proportional to 8,581.02, 12,865.20 and 5,800.80

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Solution

The fourth proportional to 8,581.02, 12,865.20 and 5,800.80 is: 8,696.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.02 : 12,865.20 = 5,800.80 : x
  2. Step 2: Convert to fraction form
    8,581.02/12,865.20 = 5,800.80/x
  3. Step 3: Cross multiply
    8,581.02x = 12,865.20 × 5,800.80
  4. Step 4: Simplify right side
    8,581.02x = 74,628,452.16
  5. Step 5: Solve for x
    x = 74,628,452.16/8,581.02
  6. Step 6: Final answer
    x = 8,696.92

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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.