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Finding the Fourth Proportional to 8,802.80, 13,198.80 and 5,103.20

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Solution

The fourth proportional to 8,802.80, 13,198.80 and 5,103.20 is: 7,651.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,802.80 : 13,198.80 = 5,103.20 : x
  2. Step 2: Convert to fraction form
    8,802.80/13,198.80 = 5,103.20/x
  3. Step 3: Cross multiply
    8,802.80x = 13,198.80 × 5,103.20
  4. Step 4: Simplify right side
    8,802.80x = 67,356,116.16
  5. Step 5: Solve for x
    x = 67,356,116.16/8,802.80
  6. Step 6: Final answer
    x = 7,651.67

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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.