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Finding the Fourth Proportional to 21,353.60, 32,035.20 and 6,563.20

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Solution

The fourth proportional to 21,353.60, 32,035.20 and 6,563.20 is: 9,846.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.60 : 32,035.20 = 6,563.20 : x
  2. Step 2: Convert to fraction form
    21,353.60/32,035.20 = 6,563.20/x
  3. Step 3: Cross multiply
    21,353.60x = 32,035.20 × 6,563.20
  4. Step 4: Simplify right side
    21,353.60x = 210,253,424.64
  5. Step 5: Solve for x
    x = 210,253,424.64/21,353.60
  6. Step 6: Final answer
    x = 9,846.28

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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.