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Finding the Fourth Proportional to 8,906.05, 13,355.02 and 4,744.99

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Solution

The fourth proportional to 8,906.05, 13,355.02 and 4,744.99 is: 7,115.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.05 : 13,355.02 = 4,744.99 : x
  2. Step 2: Convert to fraction form
    8,906.05/13,355.02 = 4,744.99/x
  3. Step 3: Cross multiply
    8,906.05x = 13,355.02 × 4,744.99
  4. Step 4: Simplify right side
    8,906.05x = 63,369,436.35
  5. Step 5: Solve for x
    x = 63,369,436.35/8,906.05
  6. Step 6: Final answer
    x = 7,115.32

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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.