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Finding the Fourth Proportional to 8,622.96, 12,924.97 and 4,917.05

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Solution

The fourth proportional to 8,622.96, 12,924.97 and 4,917.05 is: 7,370.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.96 : 12,924.97 = 4,917.05 : x
  2. Step 2: Convert to fraction form
    8,622.96/12,924.97 = 4,917.05/x
  3. Step 3: Cross multiply
    8,622.96x = 12,924.97 × 4,917.05
  4. Step 4: Simplify right side
    8,622.96x = 63,552,767.99
  5. Step 5: Solve for x
    x = 63,552,767.99/8,622.96
  6. Step 6: Final answer
    x = 7,370.18

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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.