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Finding the Fourth Proportional to 6,631.76, 9,920.28 and 5,448.44

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Solution

The fourth proportional to 6,631.76, 9,920.28 and 5,448.44 is: 8,150.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,631.76 : 9,920.28 = 5,448.44 : x
  2. Step 2: Convert to fraction form
    6,631.76/9,920.28 = 5,448.44/x
  3. Step 3: Cross multiply
    6,631.76x = 9,920.28 × 5,448.44
  4. Step 4: Simplify right side
    6,631.76x = 54,050,050.36
  5. Step 5: Solve for x
    x = 54,050,050.36/6,631.76
  6. Step 6: Final answer
    x = 8,150.18

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1.5x scale

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.