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Finding the Fourth Proportional to 19,908.76, 29,840.46 and 8,207.32

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Solution

The fourth proportional to 19,908.76, 29,840.46 and 8,207.32 is: 12,301.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,908.76 : 29,840.46 = 8,207.32 : x
  2. Step 2: Convert to fraction form
    19,908.76/29,840.46 = 8,207.32/x
  3. Step 3: Cross multiply
    19,908.76x = 29,840.46 × 8,207.32
  4. Step 4: Simplify right side
    19,908.76x = 244,910,204.17
  5. Step 5: Solve for x
    x = 244,910,204.17/19,908.76
  6. Step 6: Final answer
    x = 12,301.63

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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.