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Finding the Fourth Proportional to 14,380.10, 21,579.99 and 5,020.11

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Solution

The fourth proportional to 14,380.10, 21,579.99 and 5,020.11 is: 7,533.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,380.10 : 21,579.99 = 5,020.11 : x
  2. Step 2: Convert to fraction form
    14,380.10/21,579.99 = 5,020.11/x
  3. Step 3: Cross multiply
    14,380.10x = 21,579.99 × 5,020.11
  4. Step 4: Simplify right side
    14,380.10x = 108,334,023.35
  5. Step 5: Solve for x
    x = 108,334,023.35/14,380.10
  6. Step 6: Final answer
    x = 7,533.61

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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.