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Finding the Fourth Proportional to 5,929.75, 8,891.13 and 2,421.43

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Solution

The fourth proportional to 5,929.75, 8,891.13 and 2,421.43 is: 3,630.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,929.75 : 8,891.13 = 2,421.43 : x
  2. Step 2: Convert to fraction form
    5,929.75/8,891.13 = 2,421.43/x
  3. Step 3: Cross multiply
    5,929.75x = 8,891.13 × 2,421.43
  4. Step 4: Simplify right side
    5,929.75x = 21,529,248.92
  5. Step 5: Solve for x
    x = 21,529,248.92/5,929.75
  6. Step 6: Final answer
    x = 3,630.72

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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.