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Finding the Fourth Proportional to 19,900.62, 29,821.77 and 14,068.62

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Solution

The fourth proportional to 19,900.62, 29,821.77 and 14,068.62 is: 21,082.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.62 : 29,821.77 = 14,068.62 : x
  2. Step 2: Convert to fraction form
    19,900.62/29,821.77 = 14,068.62/x
  3. Step 3: Cross multiply
    19,900.62x = 29,821.77 × 14,068.62
  4. Step 4: Simplify right side
    19,900.62x = 419,551,149.86
  5. Step 5: Solve for x
    x = 419,551,149.86/19,900.62
  6. Step 6: Final answer
    x = 21,082.32

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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.