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Finding the Fourth Proportional to 6,362.48, 8,780.20 and 3,530.28

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Solution

The fourth proportional to 6,362.48, 8,780.20 and 3,530.28 is: 4,871.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,362.48 : 8,780.20 = 3,530.28 : x
  2. Step 2: Convert to fraction form
    6,362.48/8,780.20 = 3,530.28/x
  3. Step 3: Cross multiply
    6,362.48x = 8,780.20 × 3,530.28
  4. Step 4: Simplify right side
    6,362.48x = 30,996,608.41
  5. Step 5: Solve for x
    x = 30,996,608.41/6,362.48
  6. Step 6: Final answer
    x = 4,871.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.